{"common":{"save":0,"post_id":"8514","level":2,"total":10,"point":10,"point_extra":0},"segment":[{"id":"7556","post_id":"8514","mon_id":"1159539","chapter_id":"1159541","question":"<p data-pm-slice=\"0 0 []\">Hai ch\u1ea5t không th\u1ec3 hòa tan v\u1edbi nhau t\u1ea1o thành dung d\u1ecbch là:<\/p>","options":["A. N\u01b0\u1edbc và \u0111\u01b0\u1eddng","B. D\u1ea7u \u0103n và x\u0103ng","C. R\u01b0\u1ee3u và n\u01b0\u1edbc","D. D\u1ea7u \u0103n và cát"],"correct":"4","level":"2","hint":"<p>Hãy suy ngh\u0129 v\u1ec1 tính ch\u1ea5t c\u1ee7a các ch\u1ea5t và kh\u1ea3 n\u0103ng hòa tan c\u1ee7a chúng trong nhau. M\u1ed9t s\u1ed1 ch\u1ea5t không th\u1ec3 hòa tan trong nhau do tính ch\u1ea5t hóa h\u1ecdc khác bi\u1ec7t.<\/p>","answer":"<p>\u0110áp án \u0111úng: <strong>D. D\u1ea7u \u0103n và cát<\/strong><\/p><p>D\u1ea7u \u0103n và cát không th\u1ec3 hòa tan v\u1edbi nhau t\u1ea1o thành dung d\u1ecbch vì cát là ch\u1ea5t r\u1eafn không hòa tan trong d\u1ea7u \u0103n. Còn các c\u1eb7p ch\u1ea5t khác nh\u01b0 n\u01b0\u1edbc và \u0111\u01b0\u1eddng, r\u01b0\u1ee3u và n\u01b0\u1edbc, d\u1ea7u \u0103n và x\u0103ng có th\u1ec3 hòa tan m\u1ed9t cách d\u1ec5 dàng.<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"139","test":"0","date":"2025-02-23 23:35:38","option_type":"txt","len":2},{"id":"7557","post_id":"8514","mon_id":"1159539","chapter_id":"1159541","question":"<p data-pm-slice=\"0 0 []\">Dung d\u1ecbch là gì?<\/p>","options":["A. H\u1ed7n h\u1ee3p \u0111\u1ed3ng nh\u1ea5t c\u1ee7a ch\u1ea5t tan và n\u01b0\u1edbc","B. H\u1ed7n h\u1ee3p \u0111\u1ed3ng nh\u1ea5t c\u1ee7a ch\u1ea5t tan và dung môi","C. H\u1ed7n h\u1ee3p ch\u1ea5t tan và n\u01b0\u1edbc","D. H\u1ed7n h\u1ee3p ch\u1ea5t tan và dung môi"],"correct":"2","level":"2","hint":"<p>Dung d\u1ecbch là m\u1ed9t lo\u1ea1i h\u1ed7n h\u1ee3p mà ch\u1ea5t tan \u0111\u01b0\u1ee3c hòa tan trong dung môi, t\u1ea1o thành m\u1ed9t th\u1ec3 \u0111\u1ed3ng nh\u1ea5t. Hãy suy ngh\u0129 v\u1ec1 các thành ph\u1ea7n c\u1ee7a dung d\u1ecbch.<\/p>","answer":"<p>\u0110áp án \u0111úng: <strong>B. H\u1ed7n h\u1ee3p \u0111\u1ed3ng nh\u1ea5t c\u1ee7a ch\u1ea5t tan và dung môi<\/strong><\/p><p>Dung d\u1ecbch là h\u1ed7n h\u1ee3p \u0111\u1ed3ng nh\u1ea5t gi\u1eefa ch\u1ea5t tan và dung môi. Ch\u1ea5t tan \u0111\u01b0\u1ee3c hòa tan vào dung môi \u0111\u1ec3 t\u1ea1o ra m\u1ed9t dung d\u1ecbch \u0111\u1ed3ng nh\u1ea5t.<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"139","test":"0","date":"2025-02-23 23:36:25","option_type":"txt","len":3},{"id":"7558","post_id":"8514","mon_id":"1159539","chapter_id":"1159541","question":"<p data-pm-slice=\"0 0 []\">Trong 200 ml dung d\u1ecbch có hòa tan 8,5 gam NaNO<span class=\"math-tex\">$_{3}$<\/span>. N\u1ed3ng \u0111\u1ed9 mol c\u1ee7a dung d\u1ecbch là:<\/p>","options":["A. 0,2M.","B. 0,3M.","C. 0,4M.","D. 0,5M."],"correct":"4","level":"2","hint":"<p>S\u1eed d\u1ee5ng công th\u1ee9c tính n\u1ed3ng \u0111\u1ed9 mol c\u1ee7a m\u1ed9t ch\u1ea5t.<\/p>","answer":"<p>\u0110áp án \u0111úng: <strong>D. 0,5M.<\/strong><\/p><p>\u0110\u1ed5i: 200 mL = 0,2 L<\/p><p>n<span class=\"math-tex\">$_{NaNO_{3}}$<\/span> = m \/ M = 8,5 \/ 85 = 0,1 (mol)'<\/p><p>C<span class=\"math-tex\">$_{M}$<\/span> = n \/ V = 0,1 \/ 0,2 = 0,5 (M)<span style=\"font-size:18px\"><span style=\"box-sizing:border-box\"><span style=\"color:#000000\"><span style=\"font-family:Roboto, sans-serif\"><span style=\"font-style:normal\"><span style=\"font-variant-ligatures:normal\"><span style=\"font-variant-caps:normal\"><span style=\"letter-spacing: normal;\"><span style=\"orphans: 2;\"><span style=\"text-transform: none;\"><span style=\"widows: 2;\"><span style=\"word-spacing: 0px;\"><span style=\"white-space: normal;\"><span style=\"background-color: rgb(255, 255, 255);\"><span style=\"text-decoration-thickness: initial;\"><span style=\"text-decoration-style: initial;\"><span style=\"text-decoration-color: initial;\"><span style=\"box-sizing: border-box;\"><span style=\"box-sizing: border-box;\"><span style=\"box-sizing: border-box;\"><span style=\"display: inline-block;\"><span style=\"font-weight: 400; line-height: 0;\"><span style=\"text-transform:none\"><span style=\"font-style:normal\"><span style=\"font-weight:normal\"><span style=\"font-size-adjust:none\"><span style=\"letter-spacing:normal\"><span style=\"overflow-wrap:normal\"><span style=\"word-spacing:normal\"><span style=\"white-space:nowrap\"><span style=\"float:none\"><span style=\"max-height:none\"><span style=\"min-height:0px\"><span style=\"position:relative\"><span aria-hidden=\"true\" class=\"mjx-math\" id=\"MJXc-Node-36\" style=\"box-sizing:border-box; border-collapse:separate; border-spacing:0px\"><span style=\"display:inline-block\"><span class=\"mjx-mrow\" id=\"MJXc-Node-37\" style=\"box-sizing:content-box !important; text-align:left\"><span style=\"display:inline-block\"><span class=\"mjx-mi\" id=\"MJXc-Node-73\" style=\"box-sizing:content-box !important; text-align:left\"><span style=\"display:inline-block\"><span class=\"mjx-char MJXc-TeX-math-I\" style=\"box-sizing:content-box !important; text-align:left; padding-top:0.469em; padding-bottom:0.282em; padding-right:0.081em\"><span style=\"display:block\"><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"139","test":"0","date":"2025-02-23 23:39:28","option_type":"txt","len":0}]}