{"common":{"save":0,"post_id":"8568","level":2,"total":10,"point":10,"point_extra":0},"segment":[{"id":"7910","post_id":"8568","mon_id":"1159539","chapter_id":"1159543","question":"<p>N\u1ebfu pH = 7 thì dung d\u1ecbch có môi tr\u01b0\u1eddng:<\/p>","options":["A. Trung tính","B. Base","C. Acid","D. Mu\u1ed1i"],"correct":"1","level":"2","hint":"<p>Giá tr\u1ecb pH giúp xác \u0111\u1ecbnh tính ch\u1ea5t môi tr\u01b0\u1eddng c\u1ee7a dung d\u1ecbch. Hãy nh\u1edb kho\u1ea3ng pH c\u1ee7a axit, baz\u01a1 và trung tính \u0111\u1ec3 ch\u1ecdn \u0111áp án \u0111úng!<\/p>","answer":"<p>\u0110áp án \u0111úng: <strong>A. Trung tính<\/strong><\/p><p>pH = 7 là \u0111\u1eb7c tr\u01b0ng c\u1ee7a môi tr\u01b0\u1eddng trung tính, \u0111i\u1ec3n hình nh\u01b0 n\u01b0\u1edbc tinh khi\u1ebft. N\u1ebfu pH < 7, dung d\u1ecbch có tính axit; n\u1ebfu pH > 7, dung d\u1ecbch có tính baz\u01a1.<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"139","test":"0","date":"2025-03-04 17:16:27","option_type":"txt","len":2},{"id":"7912","post_id":"8568","mon_id":"1159539","chapter_id":"1159543","question":"<p>N\u1ebfu pH<7 thì dung d\u1ecbch có môi tr\u01b0\u1eddng:<\/p>","options":["A. Acid","B. Base","C. Mu\u1ed1i","D. Trung tính"],"correct":"1","level":"2","hint":"<p>Hãy nh\u1edb r\u1eb1ng thang \u0111o pH th\u1ec3 hi\u1ec7n tính acid, trung tính hay baz\u01a1 c\u1ee7a dung d\u1ecbch.<\/p>","answer":"<p>\u0110áp án \u0111úng: <strong>A. Acid<\/strong><\/p><p>pH là th\u01b0\u1edbc \u0111o \u0111\u1ed9 axit ho\u1eb7c baz\u01a1 c\u1ee7a m\u1ed9t dung d\u1ecbch. N\u1ebfu pH < 7, dung d\u1ecbch có tính acid. N\u1ebfu pH = 7, dung d\u1ecbch trung tính. N\u1ebfu pH > 7, dung d\u1ecbch có tính baz\u01a1.<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"139","test":"0","date":"2025-03-04 17:17:57","option_type":"txt","len":2},{"id":"7914","post_id":"8568","mon_id":"1159539","chapter_id":"1159543","question":"<p>N\u1ebfu pH>7 thì dung d\u1ecbch có môi tr\u01b0\u1eddng:<\/p>","options":["A. Mu\u1ed1i","B. Base","C. Acid","D. Trung tính"],"correct":"2","level":"2","hint":"<p>Hãy nh\u1edb r\u1eb1ng thang \u0111o pH giúp xác \u0111\u1ecbnh tính ch\u1ea5t c\u1ee7a dung d\u1ecbch. Giá tr\u1ecb pH l\u1edbn h\u01a1n 7 cho bi\u1ebft dung d\u1ecbch có tính gì?<\/p>","answer":"<p>\u0110áp án \u0111úng: <strong>B. Base<\/strong><\/p><p>Dung d\u1ecbch có pH > 7 có tính ki\u1ec1m (baz\u01a1). \u0110i\u1ec1u này có ngh\u0129a là nó ch\u1ee9a nhi\u1ec1u ion OH\u207b h\u01a1n ion H\u207a, làm cho môi tr\u01b0\u1eddng có tính baz\u01a1.<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"139","test":"0","date":"2025-03-04 17:19:42","option_type":"txt","len":2}]}
