{"segment":[{"time":24,"part":[{"title":"Ch\u1ecdn ph\u01b0\u01a1ng \u00e1n \u0110\u00daNG","title_trans":"","temp":"multiple_choice","correct":[[1]],"list":[{"point":5,"ques":" L\u1ea5y m\u1ed9t l\u01b0\u1ee3ng nh\u1ecf canxi cacbonat s\u1ea1ch ($CaC{{O}_{3}}$) cho v\u00e0o n\u01b0\u1edbc c\u1ea5t, l\u1eafc m\u1ea1nh, l\u1ecdc l\u1ea5y n\u01b0\u1edbc l\u1ecdc. Nh\u1ecf v\u00e0i gi\u1ecdt n\u01b0\u1edbc l\u1ecdc tr\u00ean t\u1ea5m k\u00ednh s\u1ea1ch. L\u00e0m bay h\u01a1i n\u01b0\u1edbc t\u1eeb t\u1eeb cho \u0111\u1ebfn h\u1ebft, quan s\u00e1t th\u1ea5y t\u1ea5m k\u00ednh kh\u00f4ng \u0111\u1ec3 l\u1ea1i d\u1ea5u v\u1ebft, ta c\u00f3 th\u1ec3 k\u1ebft lu\u1eadn \u0111\u01b0\u1ee3c canxi cacbonat l\u00e0 ch\u1ea5t:","select":["A. Kh\u00f4ng tan trong n\u01b0\u1edbc ","B. Tan trong axit ","C. Tan trong n\u01b0\u1edbc","D. Tan trong baz\u01a1"],"hint":"","explain":"<span class='basic_left'>L\u00e0m bay h\u01a1i n\u01b0\u1edbc t\u1eeb t\u1eeb cho \u0111\u1ebfn h\u1ebft, quan s\u00e1t th\u1ea5y t\u1ea5m k\u00ednh kh\u00f4ng \u0111\u1ec3 l\u1ea1i d\u1ea5u v\u1ebft n\u00ean ta c\u00f3 th\u1ec3 k\u1ebft lu\u1eadn r\u1eb1ng mu\u1ed1i $CaC{{O}_{3}}$kh\u00f4ng tan trong n\u01b0\u1edbc<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n l\u00e0 A.<\/span><\/span> ","column":2}]}],"id_ques":2400},{"time":24,"part":[{"title":"Ch\u1ecdn ph\u01b0\u01a1ng \u00e1n \u0110\u00daNG","title_trans":"","temp":"multiple_choice","correct":[[4]],"list":[{"point":5,"ques":" Ch\u1ecdn c\u00e2u \u0111\u00fang khi n\u00f3i v\u1ec1 \u0111\u1ed9 tan.<br\/>\u0110\u1ed9 tan c\u1ee7a m\u1ed9t ch\u1ea5t trong n\u01b0\u1edbc \u1edf nhi\u1ec7t \u0111\u1ed9 x\u00e1c \u0111\u1ecbnh l\u00e0:","select":["A. S\u1ed1 gam ch\u1ea5t \u0111\u00f3 tan trong 100g dung d\u1ecbch ","B. S\u1ed1 gam ch\u1ea5t \u0111\u00f3 tan trong 100g dung m\u00f4i ","C. S\u1ed1 gam ch\u1ea5t \u0111\u00f3 tan trong n\u01b0\u1edbc t\u1ea1o ra 100g dung d\u1ecbch ","D. S\u1ed1 gam ch\u1ea5t \u0111\u00f3 tan trong 100g n\u01b0\u1edbc \u0111\u1ec3 t\u1ea1o dung d\u1ecbch b\u00e3o ho\u00e0"],"hint":"","explain":"<span class='basic_left'>\u0110\u1ed9 tan c\u1ee7a m\u1ed9t ch\u1ea5t trong n\u01b0\u1edbc \u1edf nhi\u1ec7t \u0111\u1ed9 x\u00e1c \u0111\u1ecbnh l\u00e0: S\u1ed1 gam ch\u1ea5t \u0111\u00f3 tan trong 100g n\u01b0\u1edbc \u0111\u1ec3 t\u1ea1o dung d\u1ecbch b\u00e3o ho\u00e0<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n l\u00e0 D.<\/span><\/span> ","column":1}]}],"id_ques":2401},{"time":24,"part":[{"title":"Ch\u1ecdn ph\u01b0\u01a1ng \u00e1n \u0110\u00daNG","title_trans":"","temp":"multiple_choice","correct":[[4]],"list":[{"point":5,"ques":" Khi gi\u1ea3m nhi\u1ec7t \u0111\u1ed9 th\u00ec \u0111\u1ed9 tan c\u1ee7a ch\u1ea5t r\u1eafn trong n\u01b0\u1edbc thay \u0111\u1ed5i nh\u01b0 th\u00e9 n\u00e0o?","select":["A. \u0110\u1ec1u t\u0103ng ","B. \u0110\u1ec1u gi\u1ea3m ","C. Ph\u1ea7n l\u1edbn t\u0103ng ","D. Ph\u1ea7n l\u1edbn gi\u1ea3m "],"hint":"","explain":"<span class='basic_left'>\u0110\u1ed9 tan c\u1ee7a ch\u1ea5t r\u1eafn ph\u1ee5 thu\u1ed9c v\u00e0o nhi\u1ec7t \u0111\u1ed9. Trong nhi\u1ec1u tr\u01b0\u1eddng h\u1ee3p, khi gi\u1ea3m nhi\u1ec7t \u0111\u1ed9 th\u00ec \u0111\u1ed9 tan c\u1ee7a ch\u1ea5t r\u1eafn c\u0169ng gi\u1ea3m theo. S\u1ed1 \u00edt c\u00e1c tr\u01b0\u1eddng h\u1ee3p, khi gi\u1ea3m nhi\u1ec7t \u0111\u1ed9 th\u00ec \u0111\u1ed9 tan l\u1ea1i t\u0103ng.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n l\u00e0 D.<\/span><\/span> ","column":2}]}],"id_ques":2402},{"time":24,"part":[{"title":"Ch\u1ecdn ph\u01b0\u01a1ng \u00e1n \u0110\u00daNG","title_trans":"","temp":"multiple_choice","correct":[[3]],"list":[{"point":5,"ques":" Khi t\u0103ng nhi\u1ec7t \u0111\u1ed9 th\u00ec \u0111\u1ed9 tan c\u1ee7a ch\u1ea5t r\u1eafn trong n\u01b0\u1edbc thay \u0111\u1ed5i nh\u01b0 th\u1ebf n\u00e0o?","select":["A. \u0110\u1ec1u t\u0103ng ","B. \u0110\u1ec1u gi\u1ea3m ","C. Ph\u1ea7n l\u1edbn t\u0103ng ","D. Ph\u1ea7n l\u1edbn gi\u1ea3m "],"hint":"","explain":"<span class='basic_left'>\u0110\u1ed9 tan c\u1ee7a ch\u1ea5t r\u1eafn ph\u1ee5 thu\u1ed9c v\u00e0o nhi\u1ec7t \u0111\u1ed9. Trong nhi\u1ec1u tr\u01b0\u1eddng h\u1ee3p, khi t\u0103ng nhi\u1ec7t \u0111\u1ed9 th\u00ec \u0111\u1ed9 tan c\u1ee7a ch\u1ea5t r\u1eafn c\u0169ng t\u0103ng theo. S\u1ed1 \u00edt c\u00e1c tr\u01b0\u1eddng h\u1ee3p, khi t\u0103ng nhi\u1ec7t \u0111\u1ed9 th\u00ec \u0111\u1ed9 tan l\u1ea1i gi\u1ea3m. <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n l\u00e0 C.<\/span><\/span> ","column":2}]}],"id_ques":2403},{"time":24,"part":[{"title":"Ch\u1ecdn ph\u01b0\u01a1ng \u00e1n \u0110\u00daNG","title_trans":"","temp":"multiple_choice","correct":[[1]],"list":[{"point":5,"ques":" Khi gi\u1ea3m nhi\u1ec7t \u0111\u1ed9 v\u00e0 t\u0103ng \u00e1p su\u1ea5t th\u00ec \u0111\u1ed9 tan c\u1ee7a ch\u1ea5t kh\u00ed trong n\u01b0\u1edbc:","select":["A. \u0110\u1ec1u t\u0103ng","B. \u0110\u1ec1u gi\u1ea3m","C. C\u00f3 th\u1ec3 t\u0103ng v\u00e0 c\u00f3 th\u1ec3 gi\u1ea3m ","D. Kh\u00f4ng t\u0103ng v\u00e0 c\u0169ng kh\u00f4ng gi\u1ea3m."],"hint":"","explain":"<span class='basic_left'>\u0110\u1ed9 tan c\u1ee7a ch\u1ea5t kh\u00ed ph\u1ee5 thu\u1ed9c v\u00e0o nhi\u1ec7t \u0111\u1ed9 v\u00e0 \u00e1p su\u1ea5t. \u0110\u1ed9 tan c\u1ee7a ch\u1ea5t kh\u00ed trong n\u01b0\u1edbc s\u1ebd t\u0103ng n\u1ebfu ta gi\u1ea3m nhi\u1ec7t \u0111\u1ed9 v\u00e0 t\u0103ng \u00e1p su\u1ea5t.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n l\u00e0 A.<\/span><\/span> ","column":2}]}],"id_ques":2404},{"time":24,"part":[{"title":"Ch\u1ecdn ph\u01b0\u01a1ng \u00e1n \u0110\u00daNG","title_trans":"","temp":"multiple_choice","correct":[[1]],"list":[{"point":5,"ques":" Ch\u1ea5t n\u00e0o d\u01b0\u1edbi \u0111\u00e2y KH\u00d4NG tan trong n\u01b0\u1edbc:","select":["A. $Cu(OH)_2$ ","B. $NaCl$","C. $K_2SO_4$ ","D. $AgNO_3$"],"hint":"","explain":"<span class='basic_left'>H\u1ea7u h\u1ebft c\u00e1c baz\u01a1 kh\u00f4ng tan trong n\u01b0\u1edbc, tr\u1eeb m\u1ed9t s\u1ed1 baz\u01a1 nh\u01b0: $KOH,\\,NaOH,\\,Ba{{(OH)}_{2}}$c\u00f2n $Ca{{(OH)}_{2}}$\u00edt tan<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n l\u00e0 A.<\/span><\/span> ","column":2}]}],"id_ques":2405},{"time":24,"part":[{"title":"Ch\u1ecdn ph\u01b0\u01a1ng \u00e1n \u0110\u00daNG","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":5,"ques":" Khi t\u0103ng nhi\u1ec7t \u0111\u1ed9 v\u00e0 gi\u1ea3m \u00e1p su\u1ea5t th\u00ec \u0111\u1ed9 tan c\u1ee7a ch\u1ea5t kh\u00ed trong n\u01b0\u1edbc:","select":["A. \u0110\u1ec1u t\u0103ng","B. \u0110\u1ec1u gi\u1ea3m","C. C\u00f3 th\u1ec3 t\u0103ng v\u00e0 c\u00f3 th\u1ec3 gi\u1ea3m ","D. Kh\u00f4ng t\u0103ng v\u00e0 c\u0169ng kh\u00f4ng gi\u1ea3m."],"hint":"","explain":"<span class='basic_left'>\u0110\u1ed9 tan c\u1ee7a ch\u1ea5t kh\u00ed ph\u1ee5 thu\u1ed9c v\u00e0o nhi\u1ec7t \u0111\u1ed9 v\u00e0 \u00e1p su\u1ea5t. \u0110\u1ed9 tan c\u1ee7a ch\u1ea5t kh\u00ed trong n\u01b0\u1edbc s\u1ebd gi\u1ea3m n\u1ebfu ta t\u0103ng nhi\u1ec7t \u0111\u1ed9 v\u00e0 gi\u1ea3m \u00e1p su\u1ea5t.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n l\u00e0 B.<\/span><\/span> ","column":2}]}],"id_ques":2406},{"time":24,"part":[{"title":"Ch\u1ecdn ph\u01b0\u01a1ng \u00e1n \u0110\u00daNG","title_trans":"","temp":"multiple_choice","correct":[[1]],"list":[{"point":5,"ques":" \u0110\u1ed9 tan trong n\u01b0\u1edbc c\u1ee7a ch\u1ea5t r\u1eafn ph\u1ee5 thu\u1ed9c v\u00e0o:","select":["A. Nhi\u1ec7t \u0111\u1ed9 ","B. Dung m\u00f4i","C. \u00c1p su\u1ea5t ","D. C\u1ea3 A v\u00e0 C \u0111\u1ec1u \u0111\u00fang"],"hint":"","explain":"<span class='basic_left'>\u0110\u1ed9 tan c\u1ee7a ch\u1ea5t r\u1eafn ph\u1ee5 thu\u1ed9c v\u00e0o nhi\u1ec7t \u0111\u1ed9. <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n l\u00e0 A.<\/span><\/span> ","column":2}]}],"id_ques":2407},{"time":24,"part":[{"title":"Ch\u1ecdn ph\u01b0\u01a1ng \u00e1n \u0110\u00daNG","title_trans":"","temp":"multiple_choice","correct":[[3]],"list":[{"point":5,"ques":" Nh\u1eadn x\u00e9t n\u00e0o d\u01b0\u1edbi \u0111\u00e2y KH\u00d4NG \u0111\u00fang:","select":["A. T\u1ea5t c\u1ea3 c\u00e1c mu\u1ed1i c\u1ee7a Na \u0111\u1ec1u tan","B. T\u1ea5t c\u1ea3 c\u00e1c mu\u1ed1i c\u1ee7a K \u0111\u1ec1u tan","C. T\u1ea5t c\u1ea3 c\u00e1c axit \u0111\u1ec1u tan","D. T\u1ea5t c\u1ea3 c\u00e1c mu\u1ed1i nitrat \u0111\u1ec1u tan"],"hint":"","explain":"<span class='basic_left'>H\u1ea7u h\u1ebft c\u00e1c axit \u0111\u1ec1u tan trong n\u01b0\u1edbc, tr\u1eeb axit ${H_{2}}Si{{O}_{3}}$ <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n l\u00e0 C.<\/span><\/span> ","column":2}]}],"id_ques":2408},{"time":24,"part":[{"title":"Ch\u1ecdn ph\u01b0\u01a1ng \u00e1n \u0110\u00daNG","title_trans":"","temp":"multiple_choice","correct":[[4]],"list":[{"point":5,"ques":" \u0110\u1ed9 tan trong n\u01b0\u1edbc c\u1ee7a ch\u1ea5t kh\u00ed ph\u1ee5 thu\u1ed9c v\u00e0o:","select":["A. Nhi\u1ec7t \u0111\u1ed9 ","B. Dung m\u00f4i","C. \u00c1p su\u1ea5t ","D. C\u1ea3 A v\u00e0 C \u0111\u1ec1u \u0111\u00fang "],"hint":"","explain":"<span class='basic_left'>\u0110\u1ed9 tan c\u1ee7a ch\u1ea5t kh\u00ed ph\u1ee5 thu\u1ed9c v\u00e0o nhi\u1ec7t \u0111\u1ed9 v\u00e0 \u00e1p su\u1ea5t.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n l\u00e0 D.<\/span><\/span> ","column":2}]}],"id_ques":2409},{"time":24,"part":[{"title":"Ch\u1ecdn ph\u01b0\u01a1ng \u00e1n \u0110\u00daNG","title_trans":"","temp":"multiple_choice","correct":[[4]],"list":[{"point":5,"ques":" Ch\u1ea5t n\u00e0o d\u01b0\u1edbi \u0111\u00e2y tan trong n\u01b0\u1edbc:","select":["A. $Cu(OH)_2$ ","B. $H_2SiO_3$","C. $Fe(OH)_2$ ","D. $AgNO_3$ "],"hint":"","explain":"<span class='basic_left'>T\u1ea5t c\u1ea3 c\u00e1c mu\u1ed1i nitrat \u0111\u1ec1u tan trong n\u01b0\u1edbc<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n l\u00e0 D.<\/span><\/span> ","column":2}]}],"id_ques":2410},{"time":24,"part":[{"title":"Ch\u1ecdn ph\u01b0\u01a1ng \u00e1n \u0110\u00daNG","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":5,"ques":" \u1ede ${{25}^{0}}C$ ng\u01b0\u1eddi ta n\u00f3i \u0111\u1ed9 tan c\u1ee7a \u0111\u01b0\u1eddng l\u00e0 204 gam c\u00f3 ngh\u0129a l\u00e0:","select":["A. 1 l\u00edt n\u01b0\u1edbc h\u00f2a tan t\u1ed1i \u0111a \u0111\u01b0\u1ee3c 204 gam \u0111\u01b0\u1eddng","B. 100 gam n\u01b0\u1edbc h\u00f2a tan t\u1ed1i \u0111a \u0111\u01b0\u1ee3c 204 gam \u0111\u01b0\u1eddng","C. 100 ml n\u01b0\u1edbc h\u00f2a tan t\u1ed1i \u0111a \u0111\u01b0\u1ee3c 204 gam \u0111\u01b0\u1eddng ","D. 1 kg n\u01b0\u1edbc h\u00f2a tan t\u1ed1i \u0111a \u0111\u01b0\u1ee3c 204 gam \u0111\u01b0\u1eddng"],"hint":"","explain":"<span class='basic_left'>\u1ede ${{25}^{0}}C$ ng\u01b0\u1eddi ta n\u00f3i \u0111\u1ed9 tan c\u1ee7a \u0111\u01b0\u1eddng l\u00e0 204 gam c\u00f3 ngh\u0129a l\u00e0: 100 gam n\u01b0\u1edbc h\u00f2a tan t\u1ed1i \u0111a \u0111\u01b0\u1ee3c 204 gam \u0111\u01b0\u1eddng \u0111\u1ec3 t\u1ea1o th\u00e0nh dung d\u1ecbch b\u00e3o h\u00f2a.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n l\u00e0 B.<\/span><\/span> ","column":1}]}],"id_ques":2411},{"time":24,"part":[{"title":"Ch\u1ecdn ph\u01b0\u01a1ng \u00e1n \u0110\u00daNG","title_trans":"","temp":"multiple_choice","correct":[[1]],"list":[{"point":5,"ques":" D\u00e3y c\u00e1c ch\u1ea5t \u0111\u1ec1u tan trong n\u01b0\u1edbc l\u00e0:","select":["A. $NaOH,\\text{ }KCl,\\text{ }Ba{{(N{{O}_{3}})}_{2}},\\text{ }{{H}_{2}}S{{O}_{4}}~~$ ","B. $BaS{{O}_{4}},\\text{ }NaCl,\\text{ }AgN{{O}_{3}},\\text{ }{{K}_{2}}C{{O}_{3}}$","C. $CaC{{O}_{3}},\\text{ }HCl,\\text{ }KOH,\\text{ }Ca{{(N{{O}_{3}})}_{2}}$","D. ${{H}_{2}}S{{O}_{4}},\\text{ }NaOH,\\text{ }KN{{O}_{3}},\\text{ }Cu{{(OH)}_{2}}$"],"hint":"","explain":"<span class='basic_left'>H\u1ea7u h\u1ebft c\u00e1c axit \u0111\u1ec1u tan trong n\u01b0\u1edbc, tr\u1eeb axit ${H_{2}}Si{{O}_{3}}$ <br\/> C\u00e1c mu\u1ed1i c\u1ee7a $Na, K$ \u0111\u1ec1u tan trong n\u01b0\u1edbc <br\/> C\u00e1c mu\u1ed1i nitrat \u0111\u1ec1u tan trong n\u01b0\u1edbc <br\/> C\u00e1c baz\u01a1 tan trong n\u01b0\u1edbc nh\u01b0: $NaOH, KOH,..$ <br\/> Ch\u1ec9 c\u00f3 \u0111\u00e1p \u00e1n A th\u1ecfa m\u00e3n<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n l\u00e0 A.<\/span><\/span> ","column":2}]}],"id_ques":2412},{"time":24,"part":[{"title":"Ch\u1ecdn ph\u01b0\u01a1ng \u00e1n \u0110\u00daNG","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":5,"ques":" Ho\u00e0 tan 14,36g $NaCl$ v\u00e0o 40g n\u01b0\u1edbc \u1edf nhi\u1ec7t \u0111\u1ed9 200C th\u00ec \u0111\u01b0\u1ee3c dung d\u1ecbch b\u00e3o ho\u00e0. \u0110\u1ed9 tan c\u1ee7a $NaCl$ \u1edf nh\u1ecb\u00eat \u0111\u1ed9 \u0111\u00f3 l\u00e0:","select":["A. 35,5g ","B. 35,9g ","C. 36,5g ","D. 37,2g"],"hint":"","explain":"<span class='basic_left'>X\u00e9t \u1edf ${{20}^{0}}C$ <br\/> 14,36 gam $NaCl$ h\u00f2a tan v\u00e0o 40 gam n\u01b0\u1edbc \u0111\u01b0\u1ee3c dung d\u1ecbch b\u00e3o h\u00f2a <br\/> x gam $NaCl$ h\u00f2a tan v\u00e0o 100 gam n\u01b0\u1edbc \u0111\u01b0\u1ee3c dung d\u1ecbch b\u00e3o h\u00f2a <br\/> $\\Rightarrow x=\\dfrac{14,36.100}{40}=35,9\\,gam$ <br\/> V\u1eady \u0111\u1ed9 tan c\u1ee7a $NaCl$ \u1edf ${{20}^{0}}C$ l\u00e0 35,9 gam<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n l\u00e0 B.<\/span><\/span> ","column":2}]}],"id_ques":2413},{"time":24,"part":[{"title":"Ch\u1ecdn ph\u01b0\u01a1ng \u00e1n \u0110\u00daNG","title_trans":"","temp":"multiple_choice","correct":[[3]],"list":[{"point":5,"ques":" \u1ede 200C ho\u00e0 tan 40g $KN{{O}_{3}}$ v\u00e0o trong 95g n\u01b0\u1edbc th\u00ec \u0111\u01b0\u1ee3c dung d\u1ecbch b\u00e3o ho\u00e0. \u0110\u1ed9 tan c\u1ee7a $KNO_3$ \u1edf nhi\u1ec7t \u0111\u1ed9 $20^0C$ l\u00e0:","select":["A. 40,1g ","B. 44, 2g ","C. 42,1g ","D. 43,5g "],"hint":"","explain":"<span class='basic_left'>X\u00e9t \u1edf ${{20}^{0}}C$ <br\/> 40 gam $KN{{O}_{3}}$ h\u00f2a tan v\u00e0o 95 gam n\u01b0\u1edbc \u0111\u01b0\u1ee3c dung d\u1ecbch b\u00e3o h\u00f2a <br\/> x gam$KN{{O}_{3}}$ h\u00f2a tan v\u00e0o 100 gam n\u01b0\u1edbc \u0111\u01b0\u1ee3c dung d\u1ecbch b\u00e3o h\u00f2a <br\/> $\\Rightarrow x=\\dfrac{40.100}{95}\\approx 42,1\\,gam$ <br\/> V\u1eady \u0111\u1ed9 tan c\u1ee7a $~KN{{O}_{3}}$ \u1edf ${{20}^{0}}C$ l\u00e0 42,1 gam<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n l\u00e0 C.<\/span><\/span> ","column":2}]}],"id_ques":2414},{"time":24,"part":[{"title":"Ch\u1ecdn ph\u01b0\u01a1ng \u00e1n \u0110\u00daNG","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":5,"ques":" \u0110\u1ed9 tan c\u1ee7a $NaCl$ trong n\u01b0\u1edbc \u1edf ${{20}^{0}}C$ l\u00e0 36g. Khi m\u1edbi ho\u00e0 tan 14g $NaCl$ v\u00e0o 40g n\u01b0\u1edbc th\u00ec ph\u1ea3i ho\u00e0 tan th\u00eam bao nhi\u00eau gam $NaCl$ n\u1eefa \u0111\u1ec3 dung d\u1ecbch b\u00e3o ho\u00e0?","select":["A. 0,3g ","B. 0,4g","C. 0,6g ","D. 0,8g "],"hint":"","explain":"<span class='basic_left'>\u0110\u1ed9 tan c\u1ee7a $NaCl$ trong n\u01b0\u1edbc \u1edf ${{20}^{0}}C$ l\u00e0 36 gam n\u00ean <br\/> 36 gam $NaCl$ h\u00f2a tan v\u00e0o 100 gam n\u01b0\u1edbc \u0111\u1ec3 t\u1ea1o th\u00e0nh dung d\u1ecbch b\u00e3o h\u00f2a <br\/> x gam $NaCl$ h\u00f2a tan v\u00e0o 40 gam n\u01b0\u1edbc \u0111\u1ec3 t\u1ea1o th\u00e0nh dung d\u1ecbch b\u00e3o h\u00f2a <br\/> $\\Rightarrow x=\\dfrac{36.40}{100}=14,4\\,gam\\Rightarrow $ kh\u1ed1i l\u01b0\u1ee3ng $NaCl$c\u1ea7n th\u00eam l\u00e0: $m=14,4-14=0,4\\,gam$ <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n l\u00e0 B.<\/span><\/span> ","column":2}]}],"id_ques":2415},{"time":24,"part":[{"title":"Ch\u1ecdn ph\u01b0\u01a1ng \u00e1n \u0110\u00daNG","title_trans":"","temp":"multiple_choice","correct":[[1]],"list":[{"point":5,"ques":" \u1ede $20^0C$ ho\u00e0 tan 40g $~KN{{O}_{3}}$ v\u00e0o trong 95g n\u01b0\u1edbc th\u00ec \u0111\u01b0\u1ee3c dung d\u1ecbch b\u00e3o ho\u00e0. Ta c\u00f3 th\u1ec3 k\u1ebft lu\u1eadn \u0111\u01b0\u1ee3c g\u00ec v\u1ec1 1 c\u1ed1c ch\u1ee9a 80 gam n\u01b0\u1edbc c\u00f3 h\u00f2a tan 30 gam $~KN{{O}_{3}}$","select":["A. Dung d\u1ecbch ch\u01b0a b\u00e3o h\u00f2a ","B. Kh\u00f4ng th\u1ec3 k\u1ebft lu\u1eadn \u0111\u01b0\u1ee3c","C. Dung d\u1ecbch b\u00e3o h\u00f2a ","D. Dung d\u1ecbch qu\u00e1 b\u00e3o h\u00f2a"],"hint":"","explain":"<span class='basic_left'>40 gam $~KN{{O}_{3}}$ h\u00f2a tan v\u00e0o 95 gam n\u01b0\u1edbc \u0111\u1ec3 t\u1ea1o th\u00e0nh dung d\u1ecbch b\u00e3o h\u00f2a <br\/> x gam $~KN{{O}_{3}}$ h\u00f2a tan v\u00e0o 80 gam n\u01b0\u1edbc \u0111\u1ec3 t\u1ea1o th\u00e0nh dung d\u1ecbch b\u00e3o h\u00f2a<br\/> $\\Rightarrow x=\\dfrac{80.40}{95}\\approx 36,7\\,gam<30\\,gam\\Rightarrow $ dung d\u1ecbch thu \u0111\u01b0\u1ee3c ch\u01b0a b\u00e3o h\u00f2a <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n l\u00e0 A.<\/span><\/span> ","column":2}]}],"id_ques":2416},{"time":24,"part":[{"title":"Ch\u1ecdn ph\u01b0\u01a1ng \u00e1n \u0110\u00daNG","title_trans":"","temp":"multiple_choice","correct":[[4]],"list":[{"point":5,"ques":" \u0110\u1ed9 tan c\u1ee7a $AgN{{O}_{3}}$trong n\u01b0\u1edbc \u1edf ${{25}^{0}}C$ l\u00e0 222g. Khi m\u1edbi ho\u00e0 tan 14g $AgN{{O}_{3}}$v\u00e0o 10g n\u01b0\u1edbc th\u00ec ph\u1ea3i ho\u00e0 tan th\u00eam bao nhi\u00eau gam $AgN{{O}_{3}}$ n\u1eefa \u0111\u1ec3 dung d\u1ecbch b\u00e3o ho\u00e0?","select":["A. 7,3g ","B. 6,4g","C. 5,6g","D. 8,2g "],"hint":"","explain":"<span class='basic_left'>\u0110\u1ed9 tan c\u1ee7a $AgN{{O}_{3}}$ trong n\u01b0\u1edbc \u1edf ${{20}^{0}}C$ l\u00e0 222 gam n\u00ean <br\/> 222 gam $AgN{{O}_{3}}$ h\u00f2a tan v\u00e0o 100 gam n\u01b0\u1edbc \u0111\u1ec3 t\u1ea1o th\u00e0nh dung d\u1ecbch b\u00e3o h\u00f2a <br\/> x gam $AgN{{O}_{3}}$ h\u00f2a tan v\u00e0o 10 gam n\u01b0\u1edbc \u0111\u1ec3 t\u1ea1o th\u00e0nh dung d\u1ecbch b\u00e3o h\u00f2a <br\/> $\\Rightarrow x=\\dfrac{222.10}{100}=22,2\\,gam\\Rightarrow $ kh\u1ed1i l\u01b0\u1ee3ng $AgN{{O}_{3}}$c\u1ea7n th\u00eam l\u00e0: $m=22,2-14=8,2\\,gam$ <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n l\u00e0 D.<\/span><\/span> ","column":2}]}],"id_ques":2417},{"time":24,"part":[{"title":"Ch\u1ecdn ph\u01b0\u01a1ng \u00e1n \u0110\u00daNG","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":5,"ques":" Bi\u1ebft \u1edf ${{25}^{0}}C$ \u0111\u1ed9 tan trong n\u01b0\u1edbc c\u1ee7a $NaCl$ l\u00e0 36 gam. \u1ede ${{90}^{0}}C$ \u0111\u1ed9 tan trong n\u01b0\u1edbc c\u1ee7a $NaCl$ l\u00e0 50 gam. T\u00ednh l\u01b0\u1ee3ng mu\u1ed1i k\u1ebft tinh khi l\u00e0m ngu\u1ed9i 600 gam dung d\u1ecbch $NaCl$ b\u00e3o h\u00f2a t\u1eeb ${{90}^{0}}C$ \u0111\u1ebfn ${{25}^{0}}C$ ","select":["A. 37 gam ","B. 56 gam","C. 65 gam ","D. 72 gam"],"hint":"","explain":"<span class='basic_left'>X\u00e9t \u1edf ${{90}^{0}}C$ \u0111\u1ed9 tan trong n\u01b0\u1edbc c\u1ee7a $NaCl$ l\u00e0 50 gam n\u00ean <br\/> 50 gam $NaCl$h\u00f2a tan trong 100 gam n\u01b0\u1edbc \u0111\u1ec3 t\u1ea1o th\u00e0nh dung d\u1ecbch b\u00e3o h\u00f2a <br\/> $\\Rightarrow $ 50 gam $NaCl$c\u00f3 trong 150 gam dung d\u1ecbch b\u00e3o h\u00f2a <br\/> x gam $NaCl$c\u00f3 trong 600 gam dung d\u1ecbch b\u00e3o h\u00f2a <br\/> $\\Rightarrow x=\\dfrac{50.600}{150}=200\\,gam\\Rightarrow {{m}_{{{H}_{2}}O}}=600-200=400\\,gam$ <br\/> X\u00e9t \u1edf ${{25}^{0}}C$ \u0111\u1ed9 tan trong n\u01b0\u1edbc c\u1ee7a $NaCl$ l\u00e0 36 gam n\u00ean <br\/> 36 gam $NaCl$h\u00f2a tan trong 100 gam n\u01b0\u1edbc \u0111\u1ec3 t\u1ea1o th\u00e0nh dung d\u1ecbch b\u00e3o h\u00f2a <br\/> x gam $NaCl$c\u00f3 trong 400 gam n\u01b0\u1edbc \u0111\u1ec3 t\u1ea1o th\u00e0nh dung d\u1ecbch b\u00e3o h\u00f2a <br\/> $\\Rightarrow x=\\dfrac{36.400}{100}=144gam$ <br\/> Kh\u1ed1i l\u01b0\u1ee3ng mu\u1ed1i k\u1ebft tinh l\u00e0 $m=200-144=56\\,gam$ <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n l\u00e0 B.<\/span><\/span> ","column":2}]}],"id_ques":2418},{"time":24,"part":[{"title":"Ch\u1ecdn ph\u01b0\u01a1ng \u00e1n \u0110\u00daNG","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":5,"ques":" Bi\u1ebft \u1edf ${{100}^{0}}C$ \u0111\u1ed9 tan trong n\u01b0\u1edbc c\u1ee7a $NaN{{O}_{3}}$ l\u00e0 180 gam. \u1ede ${{20}^{0}}C$ \u0111\u1ed9 tan trong n\u01b0\u1edbc c\u1ee7a $NaN{{O}_{3}}$ l\u00e0 88 gam. T\u00ednh l\u01b0\u1ee3ng mu\u1ed1i k\u1ebft tinh khi l\u00e0m ngu\u1ed9i 84 gam dung d\u1ecbch $NaN{{O}_{3}}$ b\u00e3o h\u00f2a t\u1eeb ${{100}^{0}}C$ \u0111\u1ebfn ${{20}^{0}}C$","select":["A. 30,4 gam ","B. 27,6 gam","C. 25,2 gam ","D. 23,7 gam"],"hint":"","explain":"<span class='basic_left'>X\u00e9t \u1edf ${{100}^{0}}C$ \u0111\u1ed9 tan trong n\u01b0\u1edbc c\u1ee7a $NaN{{O}_{3}}$ l\u00e0 180 gam n\u00ean <br\/> 180 gam $NaN{{O}_{3}}$h\u00f2a tan trong 100 gam n\u01b0\u1edbc \u0111\u1ec3 t\u1ea1o th\u00e0nh dung d\u1ecbch b\u00e3o h\u00f2a <br\/> $\\Rightarrow $ 180 gam $NaN{{O}_{3}}$c\u00f3 trong 280 gam dung d\u1ecbch b\u00e3o h\u00f2a <br\/> x gam $NaN{{O}_{3}}$c\u00f3 trong 84 gam dung d\u1ecbch b\u00e3o h\u00f2a <br\/> $\\Rightarrow x=\\dfrac{180.84}{280}=54\\,gam\\Rightarrow {{m}_{{{H}_{2}}O}}=84-54=30\\,gam$ <br\/> X\u00e9t \u1edf ${{20}^{0}}C$ \u0111\u1ed9 tan trong n\u01b0\u1edbc c\u1ee7a $NaN{{O}_{3}}$ l\u00e0 88 gam n\u00ean <br\/> 88 gam $NaN{{O}_{3}}$h\u00f2a tan trong 100 gam n\u01b0\u1edbc \u0111\u1ec3 t\u1ea1o th\u00e0nh dung d\u1ecbch b\u00e3o h\u00f2a <br\/> x gam $NaN{{O}_{3}}$c\u00f3 trong 30 gam n\u01b0\u1edbc \u0111\u1ec3 t\u1ea1o th\u00e0nh dung d\u1ecbch b\u00e3o h\u00f2a <br\/> $\\Rightarrow x=\\dfrac{88.30}{100}=26,4gam$ <br\/> Kh\u1ed1i l\u01b0\u1ee3ng mu\u1ed1i k\u1ebft tinh l\u00e0 $m=54-26,4=27,6\\,gam$ <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n l\u00e0 B.<\/span><\/span> ","column":2}]}],"id_ques":2419}],"lesson":{"save":0,"level":2}}