{"segment":[{"time":24,"part":[{"title":"Ch\u1ecdn ph\u01b0\u01a1ng \u00e1n \u0110\u00daNG","title_trans":"","temp":"multiple_choice","correct":[[3]],"list":[{"point":5,"ques":" D\u00e3y c\u00e1c h\u1ee3p ch\u1ea5t l\u00e0 hi\u0111rocacbon l\u00e0:","select":["A. $CH_4, C_3H_8, NH_3, C_4H_{10}$","B. $CCl_4, CH_4, C_2H_2, CH_3OH$","C. $C_2H_2, C_2H_6, CH_4, C_6H_6$","D. $CH_3Cl, C_2H_5OH, C_6H_6, C_2H_2$"],"hint":"","explain":"<span class='basic_left'>Hi\u0111rocacbon l\u00e0 h\u1ee3p ch\u1ea5t h\u1eefu c\u01a1 trong ph\u00e2n t\u1eed ch\u1ec9 ch\u1ee9a C v\u00e0 H. Ch\u1ec9 c\u00f3 \u0111\u00e1p \u00e1n C th\u1ecfa m\u00e3n<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n l\u00e0 C.<\/span><\/span> ","column":1}]}],"id_ques":2471},{"time":24,"part":[{"title":"Ch\u1ecdn ph\u01b0\u01a1ng \u00e1n \u0110\u00daNG","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":5,"ques":" Ch\u1ea5t l\u00e0m m\u1ea5t m\u00e0u dung d\u1ecbch brom l\u00e0 ","select":["A. $CH_4$.","B. $CH_2 = CH \u2013 CH_3$.","C. $CH_3 \u2013 CH_3$. ","D. $CH_3 \u2013 CH_2 \u2013 CH_3$."],"hint":"","explain":"<span class='basic_left'>C\u00e1c h\u1ee3p ch\u1ea5t c\u00f3 ch\u1ee9a li\u00ean k\u1ebft \u0111\u00f4i, ba trong ph\u00e2n t\u1eed c\u00f3 ph\u1ea3n \u1ee9ng l\u00e0m m\u1ea5t m\u00e0u dung d\u1ecbch n\u01b0\u1edbc brom. Ch\u1ec9 c\u00f3 \u0111\u00e1p \u00e1n B th\u1ecfa m\u00e3n<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n l\u00e0 B.<\/span><\/span> ","column":2}]}],"id_ques":2472},{"time":24,"part":[{"title":"Ch\u1ecdn ph\u01b0\u01a1ng \u00e1n \u0110\u00daNG","title_trans":"","temp":"multiple_choice","correct":[[4]],"list":[{"point":5,"ques":" Trong nh\u00f3m c\u00e1c hi\u0111rocacbon sau, nh\u00f3m hi\u0111rocacbon n\u00e0o c\u00f3 ph\u1ea3n \u1ee9ng \u0111\u1eb7c tr\u01b0ng l\u00e0 ph\u1ea3n \u1ee9ng c\u1ed9ng :","select":["A. $C_2H_4, C_2H_6$ ","B. $C_2H_4, CH_4$","C. $C_2H_2, C_6H_6$","D. $C_2H_4, C_2H_2$"],"hint":"","explain":"<span class='basic_left'>$C_2H_4, C_2H_2$ c\u00f3 ph\u1ea3n \u1ee9ng \u0111\u1eb7c tr\u01b0ng l\u00e0 ph\u1ea3n \u1ee9ng c\u1ed9ng<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n l\u00e0 D.<\/span><\/span> ","column":2}]}],"id_ques":2473},{"time":24,"part":[{"title":"Ch\u1ecdn ph\u01b0\u01a1ng \u00e1n \u0110\u00daNG","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":5,"ques":"Ch\u1ea5t khi t\u00e1c d\u1ee5ng v\u1edbi n\u01b0\u1edbc sinh ra kh\u00ed axetilen l\u00e0 ","select":["A. $Al_4C_3$.","B. $CaC_2$.","C. $Ca$.","D. $Na$."],"hint":"","explain":"<span class='basic_left'>$Ca{{C}_{2}}+2{{H}_{2}}O\\to Ca{{(OH)}_{2}}+{{C}_{2}}{{H}_{2}}$ <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n l\u00e0 B.<\/span><\/span> ","column":2}]}],"id_ques":2474},{"time":24,"part":[{"title":"Ch\u1ecdn ph\u01b0\u01a1ng \u00e1n \u0110\u00daNG","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":5,"ques":" Kh\u00ed tham gia ph\u1ea3n \u1ee9ng tr\u00f9ng h\u1ee3p l\u00e0 ","select":["A. $CH_4$.","B. $C_2H_4$.","C. $C_3H_8$.","D. $C_2H_6$."],"hint":"","explain":"<span class='basic_left'>$C_2H_4$ c\u00f3 ph\u1ea3n \u1ee9ng tr\u00f9ng h\u1ee3p c\u00e1c ph\u00e2n t\u1eed nh\u1ecf t\u1ea1o th\u00e0nh ph\u00e2n t\u1eed l\u1edbn \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 polime <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n l\u00e0 B.<\/span><\/span> ","column":2}]}],"id_ques":2475},{"time":24,"part":[{"title":"Ch\u1ecdn ph\u01b0\u01a1ng \u00e1n \u0110\u00daNG","title_trans":"","temp":"multiple_choice","correct":[[4]],"list":[{"point":5,"ques":" D\u1ea7u m\u1ecf c\u00f3 nhi\u1ec7t \u0111\u1ed9 s\u00f4i:","select":["A. T\u0103ng d\u1ea7n ","B. Gi\u1ea3m d\u1ea7n.","C. Kh\u00f4ng thay \u0111\u1ed5i","D. Kh\u00f4ng c\u00f3 nhi\u1ec7t \u0111\u1ed9 s\u00f4i nh\u1ea5t \u0111\u1ecbnh"],"hint":"","explain":"<span class='basic_left'>D\u1ea7u m\u1ecf l\u00e0 h\u1ed7n h\u1ee3p c\u1ee7a nhi\u1ec1u ch\u1ea5t n\u00ean c\u00f3 nhi\u1ec7t \u0111\u1ed9 s\u00f4i kh\u00f4ng nh\u1ea5t \u0111\u1ecbnh<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n l\u00e0 D.<\/span><\/span> ","column":1}]}],"id_ques":2476},{"time":24,"part":[{"title":"Ch\u1ecdn ph\u01b0\u01a1ng \u00e1n \u0110\u00daNG","title_trans":"","temp":"multiple_choice","correct":[[4]],"list":[{"point":5,"ques":"Etilen c\u00f3 th\u1ec3 tham gia c\u00e1c ph\u1ea3n \u1ee9ng n\u00e0o sau \u0111\u00e2y ","select":["A. Ph\u1ea3n \u1ee9ng c\u1ed9ng Brom ","B. Ph\u1ea3n \u1ee9ng tr\u00f9ng h\u1ee3p t\u1ea1o ra polietilen","C. Ph\u1ea3n \u1ee9ng ch\u00e1y t\u1ea1o ra kh\u00ed cacbonic v\u00e0 n\u01b0\u1edbc.","D. C\u1ea3 a, b, c"],"hint":"","explain":"<span class='basic_left'>Etilen c\u00f3 th\u1ec3 tham gia c\u00e1c ph\u1ea3n \u1ee9ng: c\u1ed9ng brom, tr\u00f9ng h\u1ee3p t\u1ea1o polime, ch\u00e1y t\u1ea1o kh\u00ed cacbonic v\u00e0 n\u01b0\u1edbc<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n l\u00e0 D.<\/span><\/span> ","column":1}]}],"id_ques":2477},{"time":24,"part":[{"title":"Ch\u1ecdn ph\u01b0\u01a1ng \u00e1n \u0110\u00daNG","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":5,"ques":"Hi\u0111rocacbon n\u00e0o sau \u0111\u00e2y trong ph\u00e2n t\u1eed v\u1eeba c\u00f3 li\u00ean k\u1ebft \u0111\u01a1n v\u1eeba c\u00f3 li\u00ean k\u1ebft ba","select":["A. Metan","B. Axetilen","C. Etilen","D. Etan"],"hint":"","explain":"<span class='basic_left'>$H-C\\equiv C-H$ : Axetilen<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n l\u00e0 B.<\/span><\/span> ","column":2}]}],"id_ques":2478},{"time":24,"part":[{"title":"Ch\u1ecdn ph\u01b0\u01a1ng \u00e1n \u0110\u00daNG","title_trans":"","temp":"multiple_choice","correct":[[4]],"list":[{"point":5,"ques":"2,9 gam ch\u1ea5t A \u1edf \u0111ktc c\u00f3 th\u1ec3 t\u00edch l\u00e0 1,12 l\u00edt. V\u1eady A l\u00e0 ","select":["A. $C_3H_6$.","B. $CH_4$.","C. $C_4H_8$.","D. $C_4H_{10}$."],"hint":"","explain":"<span class='basic_left'>$\\begin{aligned} & {{n}_{A}}=0,05\\,\\,mol \\\\ & {{M}_{A}}=\\dfrac{2,9}{0,05}=58\\,({{C}_{4}}{{H}_{10}}) \\\\ \\end{aligned}$ <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n l\u00e0 D.<\/span><\/span> ","column":2}]}],"id_ques":2479},{"time":24,"part":[{"title":"Ch\u1ecdn ph\u01b0\u01a1ng \u00e1n \u0110\u00daNG","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":5,"ques":" C\u00f4ng th\u1ee9c c\u1ea5u t\u1ea1o c\u1ee7a benzen c\u00f3 \u0111\u1eb7c \u0111i\u1ec3m:","select":["A. V\u00f2ng 6 c\u1ea1nh, 6 li\u00ean k\u1ebft \u0111\u01a1n.","B. V\u00f2ng 6 c\u1ea1nh , 3 li\u00ean k\u1ebft \u0111\u00f4i xen k\u1ebd v\u1edbi 3 li\u00ean k\u1ebft \u0111\u01a1n.","C. V\u00f2ng 6 c\u1ea1nh , 2 li\u00ean k\u1ebft \u0111\u00f4i xen k\u1ebd v\u1edbi 4 li\u00ean k\u1ebft \u0111\u01a1n","D. V\u00f2ng 6 c\u1ea1nh , 4 li\u00ean k\u1ebft \u0111\u00f4i xen k\u1ebd v\u1edbi 2 li\u00ean k\u1ebft \u0111\u01a1n."],"hint":"","explain":"<span class='basic_left'>Benzen l\u00e0 ph\u00e2n t\u1eed c\u00f3 6 nguy\u00ean t\u1eed C li\u00ean k\u1ebft v\u1edbi nhau t\u1ea1o th\u00e0nh v\u00f2ng 6 c\u1ea1nh \u0111\u1ec1u, c\u00f3 3 li\u00ean k\u1ebft \u0111\u01a1n xen k\u1ebd 3 li\u00ean k\u1ebft \u0111\u00f4i, m\u1ed7i nguy\u00ean t\u1eed C li\u00ean k\u1ebft v\u1edbi 1 nguy\u00ean t\u1eed C b\u1eb1ng 1 li\u00ean k\u1ebft \u0111\u01a1n.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n l\u00e0 B.<\/span><\/span> ","column":1}]}],"id_ques":2480},{"time":24,"part":[{"title":"Ch\u1ecdn ph\u01b0\u01a1ng \u00e1n \u0110\u00daNG","title_trans":"","temp":"multiple_choice","correct":[[4]],"list":[{"point":5,"ques":" Vi\u00ean than t\u1ed5 ong \u0111\u01b0\u1ee3c t\u1ea1o nhi\u1ec1u l\u1ed7 nh\u1ecf v\u1edbi m\u1ee5c \u0111\u00edch n\u00e0o sau \u0111\u00e2y","select":["A. Tr\u00f4ng \u0111\u1eb9p m\u1eaft","B. \u0110\u1ec3 c\u00f3 th\u1ec3 treo khi ph\u01a1i","C. \u0110\u1ec3 gi\u1ea3m tr\u1ecdng l\u01b0\u1ee3ng","D. \u0110\u1ec3 than ti\u1ebfp x\u00fac v\u1edbi nhi\u1ec1u kh\u00f4ng kh\u00ed gi\u00fap than ch\u00e1y ho\u00e0n"],"hint":"","explain":"<span class='basic_left'>Vi\u00ean than t\u1ed5 ong \u0111\u01b0\u1ee3c t\u1ea1o nhi\u1ec1u l\u1ed7 nh\u1ecf \u0111\u1ec3 than ti\u1ebfp x\u00fac v\u1edbi nhi\u1ec1u kh\u00f4ng kh\u00ed gi\u00fap than ch\u00e1y ho\u00e0n<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n l\u00e0 D.<\/span><\/span> ","column":1}]}],"id_ques":2481},{"time":24,"part":[{"title":"Ch\u1ecdn ph\u01b0\u01a1ng \u00e1n \u0110\u00daNG","title_trans":"","temp":"multiple_choice","correct":[[3]],"list":[{"point":5,"ques":"M\u1ed9t h\u1ee3p ch\u1ea5t h\u1eefu c\u01a1 A c\u00f3 th\u00e0nh ph\u1ea7n ph\u1ea7n tr\u0103m kh\u1ed1i l\u01b0\u1ee3ng cacbon l\u00e0 75%. V\u1eady A l\u00e0:","select":["A. $C_2H_4$.","B. $C_2H_6$.","C. $CH_4$.","D. $C_2H_2$."],"hint":"","explain":"<span class='basic_left'>T\u00ednh % kh\u1ed1i l\u01b0\u1ee3ng C ch\u1ec9 c\u00f3 \u0111\u00e1p \u00e1n C th\u1ecfa m\u00e3n:<br\/>$\\%{{m}_{C}}=\\dfrac{12}{16}.100\\%=75\\%$ <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n l\u00e0 C.<\/span><\/span> ","column":2}]}],"id_ques":2482},{"time":24,"part":[{"title":"Ch\u1ecdn ph\u01b0\u01a1ng \u00e1n \u0110\u00daNG","title_trans":"","temp":"multiple_choice","correct":[[4]],"list":[{"point":5,"ques":"Khi \u0111\u1ed1t ho\u00e0n to\u00e0n 1 hi\u0111rocacbon A ng\u01b0\u1eddi ta thu \u0111\u01b0\u1ee3c s\u1ed1 mol $CO_2$ v\u00e0 s\u1ed1 mol $H_2O$ b\u1eb1ng nhau. V\u1eady A l\u00e0 ","select":["A. $CH_4$. ","B. $C_2H_6$.","C. $C_2H_2$.","D. $C_3H_6$."],"hint":"","explain":"<span class='basic_left'>$2{{C}_{3}}{{H}_{6}}+9{{O}_{2}}\\xrightarrow{{{t}^{0}}}6C{{O}_{2}}+6{{H}_{2}}O$ <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n l\u00e0 D.<\/span><\/span> ","column":2}]}],"id_ques":2483},{"time":24,"part":[{"title":"Ch\u1ecdn ph\u01b0\u01a1ng \u00e1n \u0110\u00daNG","title_trans":"","temp":"multiple_choice","correct":[[1]],"list":[{"point":5,"ques":" M\u1ed9t h\u1ee3p ch\u1ea5t h\u1eefu c\u01a1 X c\u00f3 ch\u1ee9a 12,8% cacbon; 2,1 % hi\u0111ro; 85,1% brom v\u1ec1 kh\u1ed1i l\u01b0\u1ee3ng. V\u1eady X l\u00e0 Nh\u1eadp c\u00e2u h\u1ecfi","select":["A. $C_2H_4Br_2$.","B. $C_2H_2Br_4$.","C. $C_6H_5Br$. ","D. $C_6H_6Br_6$."],"hint":"","explain":"<span class='basic_left'>Gi\u1ea3 s\u1eed c\u00f3 100 gam h\u1ee3p ch\u1ea5t h\u1eefu c\u01a1 <br\/> $\\begin{aligned} & \\Rightarrow {{m}_{Br}}=85,1\\,g;\\,\\,\\,{{m}_{H}}=2,1\\,g;\\,\\,\\,{{m}_{C}}=12,8\\,g \\\\ & \\Rightarrow {{n}_{Br}}=\\dfrac{85,1}{80}\\approx 1,06\\,mol;\\,\\,\\,{{n}_{H}}=\\dfrac{2,1}{1}\\,=2,1\\,mol;\\,\\,\\,{{n}_{C}}=\\dfrac{12,8}{12}\\,\\approx 1,06\\,mol \\\\ & {{n}_{Br}}:{{n}_{H}}:{{n}_{C}}\\approx 1:2:1 \\\\ \\end{aligned}$ <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":2484},{"time":24,"part":[{"title":"Ch\u1ecdn ph\u01b0\u01a1ng \u00e1n \u0110\u00daNG","title_trans":"","temp":"multiple_choice","correct":[[1]],"list":[{"point":5,"ques":"Khi \u0111\u1ed1t ch\u00e1y ho\u00e0n to\u00e0n m\u1ed9t l\u00edt kh\u00ed X thu \u0111\u01b0\u1ee3c 3 l\u00edt $CO_2$. Bi\u1ebft c\u00e1c kh\u00ed \u0111o \u1edf c\u00f9ng \u0111i\u1ec1u ki\u1ec7n \u00e1p su\u1ea5t v\u00e0 nhi\u1ec7t \u0111\u1ed9. V\u1eady X l\u00e0 ","select":["A. $C_3H_8$.","B. $CH_4$.","C. $C_2H_2$.","D. $C_2H_4$."],"hint":"","explain":"<span class='basic_left'>$\\begin{aligned} & {{C}_{3}}{{H}_{8}}+5{{O}_{2}}\\xrightarrow{{{t}^{0}}}3C{{O}_{2}}+4{{H}_{2}}O \\\\ & 1\\,mol\\,\\,\\,\\,\\,\\,\\,\\,\\,\\,\\,\\,\\,\\,\\,\\,\\,\\,\\,\\,\\,\\,\\,\\,\\,\\,\\,\\,\\,\\,\\,\\,3\\,mol \\\\ \\end{aligned}$ <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n l\u00e0 A.<\/span><\/span> ","column":2}]}],"id_ques":2485},{"time":24,"part":[{"title":"Ch\u1ecdn ph\u01b0\u01a1ng \u00e1n \u0110\u00daNG","title_trans":"","temp":"multiple_choice","correct":[[1]],"list":[{"point":5,"ques":"Cho 1,6 gam h\u1ed7n h\u1ee3p g\u1ed3m $CH_4$ v\u00e0 $C_2H_4$ \u0111i qua dung d\u1ecbch brom, ph\u1ea3n \u1ee9ng x\u1ea3y ra ho\u00e0n to\u00e0n, ph\u1ea3i d\u00f9ng 80 gam dung d\u1ecbch brom 5%. Ph\u1ea7n tr\u0103m theo kh\u1ed1i l\u01b0\u1ee3ng c\u1ee7a m\u1ed7i kh\u00ed trong h\u1ed7n h\u1ee3p l\u00e0 ","select":["A. 56,25% $CH_4$ v\u00e0 43,75% v\u00e0 $C_2H_4$ ","B. 70% $CH_4$ v\u00e0 30% v\u00e0 $C_2H_4$.","C. 43,75% $CH_4$ v\u00e0 56,25% v\u00e0 $C_2H_4$ ","D. 87,5% $CH_4$ v\u00e0 12,5 % v\u00e0 $C_2H_4$ ."],"hint":"","explain":"<span class='basic_left'>$\\begin{aligned} & {{m}_{B{{r}_{2}}}}=\\dfrac{80.5\\%}{100\\%}=4\\,gam \\\\ & {{n}_{B{{r}_{2}}}}=0,025\\,\\,mol \\\\ & {{C}_{2}}{{H}_{4}}+B{{r}_{2}}\\to {{C}_{2}}{{H}_{4}}B{{r}_{2}} \\\\ & {{n}_{{{C}_{2}}{{H}_{4}}}}={{n}_{B{{r}_{2}}}}=0,025\\,mol \\\\ & {{m}_{{{C}_{2}}{{H}_{4}}}}=0,7\\,gam \\\\ & \\%{{m}_{{{C}_{2}}{{H}_{4}}}}=\\dfrac{0,7}{1,6}.100\\%=43,75\\% \\\\ & \\%{{m}_{C{{H}_{4}}}}=56,25\\% \\\\ \\end{aligned}$ <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n l\u00e0 A.<\/span><\/span> ","column":1}]}],"id_ques":2486},{"time":24,"part":[{"title":"Ch\u1ecdn ph\u01b0\u01a1ng \u00e1n \u0110\u00daNG","title_trans":"","temp":"multiple_choice","correct":[[4]],"list":[{"point":5,"ques":"Th\u1ec3 t\u00edch oxi c\u1ea7n d\u00f9ng \u0111\u1ec3 \u0111\u1ed1t ch\u00e1y ho\u00e0n to\u00e0n h\u1ed7n h\u1ee3p g\u1ed3m 4,48 l\u00edt $C_2H_2$ v\u00e0 2,24 l\u00edt $C_2H_4$ (c\u00e1c th\u1ec3 t\u00edch \u1edf \u0111ktc) l\u00e0","select":["A. 6,72 l\u00edt.","B. 15,68 l\u00edt","C. 13,44 l\u00edt. ","D. 17,92 l\u00edt."],"hint":"","explain":"<span class='basic_left'>$\\begin{aligned} & {{n}_{{{C}_{2}}{{H}_{2}}}}=0,2\\,mol;\\,\\,{{n}_{{{C}_{2}}{{H}_{4}}}}=0,1\\,mol \\\\ & 2{{C}_{2}}{{H}_{2}}+5{{O}_{2}}\\xrightarrow{{{t}^{0}}}4C{{O}_{2}}+2{{H}_{2}}O\\,\\,\\,(1) \\\\ & {{C}_{2}}{{H}_{4}}+3{{O}_{2}}\\xrightarrow{{{t}^{0}}}2C{{O}_{2}}+2{{H}_{2}}O\\,\\,\\,\\,\\,(2) \\\\ & \\left. \\begin{aligned} & {{n}_{{{O}_{2}}\\,\\,(1)}}=\\dfrac{5}{2}{{n}_{{{C}_{2}}{{H}_{2}}}}=0,5\\,mol \\\\ & {{n}_{{{O}_{2}}\\,\\,(2)}}=3{{n}_{{{C}_{2}}{{H}_{4}}}}=0,3\\,mol \\\\ \\end{aligned} \\right\\}\\Rightarrow {{n}_{{{O}_{2}}}}=0,8\\,mol\\Rightarrow {{V}_{{{O}_{2}}}}=17,92\\,L \\\\ & \\\\ \\end{aligned}$ <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n l\u00e0 D.<\/span><\/span> ","column":2}]}],"id_ques":2487},{"time":24,"part":[{"title":"Ch\u1ecdn ph\u01b0\u01a1ng \u00e1n \u0110\u00daNG","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":5,"ques":"Cho 5,6 l\u00edt h\u1ed7n h\u1ee3p kh\u00ed (\u0111ktc) g\u1ed3m $CH_4$ v\u00e0 $C_2H_4$ c\u00f3 t\u1ec9 l\u1ec7 th\u1ec3 t\u00edch l\u00e0 3 : 2 qua dung d\u1ecbch ch\u1ee9a 20 gam brom. Kh\u1ed1i l\u01b0\u1ee3ng brom c\u00f2n d\u01b0 l\u00e0 (Bi\u1ebft ph\u1ea3n \u1ee9ng x\u1ea3y ra ho\u00e0n to\u00e0n) ","select":["A. 12 gam. ","B. 4 gam.","C. 16 gam. ","D. 8 gam."],"hint":"","explain":"<span class='basic_left'>$\\begin{aligned} & {{n}_{hh}}=0,25\\,mol\\Rightarrow {{n}_{C{{H}_{4}}}}=\\dfrac{0,25.3}{3+2}=0,15\\,mol\\Rightarrow {{n}_{{{C}_{2}}{{H}_{4}}}}=0,1\\,mol \\\\ & {{C}_{2}}{{H}_{4}}+B{{r}_{2}}\\to {{C}_{2}}{{H}_{4}}Br\\,\\,(1) \\\\ & {{n}_{B{{r}_{2}}\\,(1)}}={{n}_{{{C}_{2}}{{H}_{4}}}}=0,1\\,mol \\\\ & {{n}_{B{{r}_{2}}\\,\\,(\\text{b\u0111})}}=\\dfrac{20}{160}=0,125\\,mol \\\\ & \\Rightarrow {{n}_{B{{r}_{2}}\\,(\\text{d\u01b0})}}=0,125-0,1=0,025\\,mol\\Rightarrow {{m}_{B{{r}_{2}}\\,\\,(\\text{d\u01b0})}}=4\\,gam \\\\ \\end{aligned}$ <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n l\u00e0 B.<\/span><\/span> ","column":2}]}],"id_ques":2488},{"time":24,"part":[{"title":"Ch\u1ecdn ph\u01b0\u01a1ng \u00e1n \u0110\u00daNG","title_trans":"","temp":"multiple_choice","correct":[[1]],"list":[{"point":5,"ques":"\u0110\u1ed1t ho\u00e0n to\u00e0n V l\u00edt h\u1ed7n h\u1ee3p kh\u00ed (\u1edf \u0111ktc) g\u1ed3m $CH_4$ v\u00e0 $C_2H_4$ (t\u1ec9 l\u1ec7 mol 1 : 1) r\u1ed3i cho to\u00e0n b\u1ed9 s\u1ea3n ph\u1ea9m ch\u00e1y v\u00e0o dung d\u1ecbch n\u01b0\u1edbc v\u00f4i trong d\u01b0 th\u1ea5y xu\u1ea5t hi\u1ec7n 3 gam k\u1ebft t\u1ee7a. Gi\u00e1 tr\u1ecb c\u1ee7a V l\u00e0 ","select":["A. 0,448 l\u00edt.","B. 4,48 l\u00edt.","C. 0,672 l\u00edt","D. 6,72 l\u00edt."],"hint":"","explain":"<span class='basic_left'>G\u1ecdi x l\u00e0 s\u1ed1 mol m\u1ed7i kh\u00ed trong h\u1ed7n h\u1ee3p. <br\/> $\\begin{aligned} & C{{H}_{4}}+2{{O}_{2}}\\xrightarrow{{{t}^{0}}}C{{O}_{2}}+2{{H}_{2}}O \\\\ & x\\,mol\\,\\,\\,\\,\\,\\,\\,\\,\\,\\,\\,\\,\\,\\,\\,\\,\\,\\,\\,\\,\\,\\,\\,\\,\\,\\,\\,\\,\\,\\,\\,x\\,mol \\\\ & {{C}_{2}}{{H}_{4}}+3{{O}_{2}}\\xrightarrow{{{t}^{0}}}2C{{O}_{2}}+2{{H}_{2}}O \\\\ & x\\,mol\\,\\,\\,\\,\\,\\,\\,\\,\\,\\,\\,\\,\\,\\,\\,\\,\\,\\,\\,\\,\\,\\,\\,\\,\\,\\,\\,\\,\\,\\,\\,2x\\,mol \\\\ & \\Rightarrow \\text{T\u1ed5ng}{{n}_{C{{O}_{2}}}}=3x\\,\\,mol \\\\ & C{{O}_{2}}+Ca{{(OH)}_{2}}\\to CaC{{O}_{3}}\\downarrow +{{H}_{2}}O \\\\ & 3x\\,\\,mol\\,\\,\\,\\,\\,\\,\\,\\,\\,\\,\\,\\,\\,\\,\\,\\,\\,\\,\\,\\,\\,\\,\\,\\,\\,\\,\\,\\,\\,\\,\\,3x\\,mol \\\\ & {{n}_{\\downarrow }}=3x=\\dfrac{3}{100}\\Rightarrow x=0,01\\,mol \\\\ & \\Rightarrow {{n}_{hh}}=0,02\\,mol\\Rightarrow V=0,448\\,L \\\\ \\end{aligned}$ <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n l\u00e0 A.<\/span><\/span> ","column":2}]}],"id_ques":2489},{"time":24,"part":[{"title":"Ch\u1ecdn ph\u01b0\u01a1ng \u00e1n \u0110\u00daNG","title_trans":"","temp":"multiple_choice","correct":[[3]],"list":[{"point":5,"ques":"Kh\u1ed1i l\u01b0\u1ee3ng dung d\u1ecbch brom 5% c\u1ea7n d\u00f9ng \u0111\u1ec3 t\u00e1c d\u1ee5ng h\u1ebft 5,6 l\u00edt h\u1ed7n h\u1ee3p g\u1ed3m 40% $C_2H_4$ v\u00e0 60% $C_2H_2$ (\u1edf \u0111ktc) l\u00e0","select":["A. 640 gam.","B. 800 gam.","C. 1280 gam. ","D. 400 gam"],"hint":"","explain":"<span class='basic_left'>$\\begin{aligned} & {{n}_{hh}}=0,25\\,mol\\Rightarrow {{n}_{{{C}_{2}}{{H}_{4}}}}=\\dfrac{0,25.40\\%}{100\\%}=0,1\\,mol\\Rightarrow {{n}_{{{C}_{2}}{{H}_{2}}}}=0,15\\,mol \\\\ & {{C}_{2}}{{H}_{4}}+B{{r}_{2}}\\to {{C}_{2}}{{H}_{4}}B{{r}_{2}} \\\\ & 0,1\\,\\,\\,\\,\\,\\,\\,\\,\\,\\,\\,\\,0,1 \\\\ & {{C}_{2}}{{H}_{2}}+2B{{r}_{2}}\\to {{C}_{2}}{{H}_{2}}B{{r}_{4}} \\\\ & 0,15\\,\\,\\,\\,\\,\\,\\,\\,\\,2.0,15 \\\\ & \\Rightarrow {{n}_{B{{r}_{2}}}}=0,1+0,3=0,4\\,mol \\\\ & \\Rightarrow {{m}_{B{{r}_{2}}}}=64\\,gam \\\\ & \\Rightarrow {{m}_{\\text{dd}}}=\\dfrac{64.100\\%}{5\\%}=1280\\,gam \\\\ \\end{aligned}$ <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n l\u00e0 C.<\/span><\/span> ","column":2}]}],"id_ques":2490}],"lesson":{"save":0,"level":2}}