{"common":{"save":0,"post_id":"8567","level":1,"total":10,"point":10,"point_extra":0},"segment":[{"id":"7894","post_id":"8567","mon_id":"1159539","chapter_id":"1159543","question":"<p>Base nào là ki\u1ec1m?<\/p>","options":["A. Ba(OH)<span class=\"math-tex\">$_{2}$<\/span>","B. Cu(OH)<span class=\"math-tex\">$_{2}$<\/span>","C. Mg(OH)<span class=\"math-tex\">$_{2}$<\/span>","D. Fe(OH)<span class=\"math-tex\">$_{2}$<\/span>"],"correct":"1","level":"1","hint":"<p>Hãy nh\u1edb r\u1eb1ng ki\u1ec1m là baz\u01a1 tan \u0111\u01b0\u1ee3c trong n\u01b0\u1edbc, t\u1ea1o dung d\u1ecbch có tính baz\u01a1 m\u1ea1nh.<\/p>","answer":"<p>\u0110áp án \u0111úng: <strong>A. Ba(OH)<span class=\"math-tex\">$_{2}$<\/span><\/strong><\/p><p>Ki\u1ec1m là nh\u1eefng baz\u01a1 tan \u0111\u01b0\u1ee3c trong n\u01b0\u1edbc. Trong các l\u1ef1a ch\u1ecdn, <strong data-end=\"253\" data-start=\"242\">Ba(OH)\u2082<\/strong> là baz\u01a1 tan t\u1ed1t trong n\u01b0\u1edbc, t\u1ea1o dung d\u1ecbch có tính ki\u1ec1m m\u1ea1nh. Các baz\u01a1 còn l\u1ea1i có \u0111\u1ed9 tan r\u1ea5t th\u1ea5p nên không \u0111\u01b0\u1ee3c g\u1ecdi là ki\u1ec1m.<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"139","test":"0","date":"2025-03-03 21:52:22","option_type":"math","len":0},{"id":"7895","post_id":"8567","mon_id":"1159539","chapter_id":"1159543","question":"<p>Phát bi\u1ec3u \u0111úng là:<\/p>","options":["A. Môi tr\u01b0\u1eddng ki\u1ec1m có pH<7","B. Môi tr\u01b0\u1eddng ki\u1ec1m có pH>7","C. Môi tr\u01b0\u1eddng trung tính có pH≠7","D. Môi tr\u01b0\u1eddng acid có pH>7"],"correct":"2","level":"1","hint":"<p data-end=\"35\" data-start=\"0\">Hãy nh\u1edb thang \u0111o pH:<\/p><p>- pH = 7 là trung tính.<\/p><p>- pH < 7 là môi tr\u01b0\u1eddng gì?<\/p><p>- pH > 7 là môi tr\u01b0\u1eddng gì?<\/p>","answer":"<p>\u0110áp án \u0111úng: <strong>B. Môi tr\u01b0\u1eddng ki\u1ec1m có pH>7<\/strong><\/p><p data-end=\"236\" data-start=\"171\">Thang \u0111o pH xác \u0111\u1ecbnh tính ch\u1ea5t c\u1ee7a dung d\u1ecbch:<\/p><p><strong data-end=\"249\" data-start=\"239\">- pH < 7<\/strong>: Môi tr\u01b0\u1eddng <strong data-end=\"270\" data-start=\"262\">axit<\/strong>.<\/p><p><strong data-end=\"286\" data-start=\"276\">- pH = 7<\/strong>: Môi tr\u01b0\u1eddng <strong data-end=\"313\" data-start=\"299\">trung tính<\/strong>.<\/p><p><strong data-end=\"329\" data-start=\"319\">- pH > 7<\/strong>: Môi tr\u01b0\u1eddng <strong data-end=\"350\" data-start=\"342\">ki\u1ec1m<\/strong> (baz\u01a1).<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"139","test":"0","date":"2025-03-03 21:53:44","option_type":"txt","len":3},{"id":"7896","post_id":"8567","mon_id":"1159539","chapter_id":"1159543","question":"<p>Base là nh\u1eefng ch\u1ea5t làm cho qu\u1ef3 tím chuy\u1ec3n sang màu nào trong s\u1ed1 các màu sau \u0111ây?<\/p>","options":["A. \u0110\u1ecf","B. Xanh","C. Tím","D. Vàng"],"correct":"2","level":"1","hint":"<p>Hãy nh\u1edb l\u1ea1i tính ch\u1ea5t c\u1ee7a qu\u1ef3 tím khi ti\u1ebfp xúc v\u1edbi dung d\u1ecbch baz\u01a1.<\/p>","answer":"<p>\u0110áp án \u0111úng: <strong>B. Xanh<\/strong><\/p><p>Dung d\u1ecbch baz\u01a1 (base) làm cho gi\u1ea5y qu\u1ef3 tím chuy\u1ec3n sang màu xanh, trong khi axit làm qu\u1ef3 tím hóa \u0111\u1ecf. N\u1ebfu dung d\u1ecbch trung tính, qu\u1ef3 tím không \u0111\u1ed5i màu.<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"139","test":"0","date":"2025-03-03 21:54:38","option_type":"txt","len":1}]}
