C\u00e1c th\u1ea7y c\u00f4 t\u1ed5 H\u00f3a tr\u01b0\u1eddng THPT Nguy\u1ec5n Th\u1ecb Minh Khai t\u1ec9nh S\u00f3c Tr\u0103ng cho r\u1eb1ng s\u1ebd c\u00f3 r\u1ea5t nhi\u1ec1u \u01b0u \u0111i\u1ec3m khi v\u1eadn d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p gi\u1ea3i To\u00e1n b\u1eb1ng \u0111\u1ed3 th\u1ecb \u0111\u1ec3 gi\u1ea3i b\u00e0i t\u1eadp H\u00f3a h\u1ecdc b\u1edfi ph\u01b0\u01a1ng ph\u00e1p n\u00e0y s\u1ebd mang l\u1ea1i s\u1ef1 t\u1ed1i \u01b0u v\u1ec1 th\u1eddi gian cho c\u00e1c em h\u1ecdc sinh.<\/strong><\/em><\/p>\n

C\u00e1c th\u1ea7y c\u00f4 t\u1ed5 H\u00f3a tr\u01b0\u1eddng THPT Nguy\u1ec5n Th\u1ecb Minh Khai t\u1ec9nh S\u00f3c Tr\u0103ng cho r\u1eb1ng s\u1ebd c\u00f3 r\u1ea5t nhi\u1ec1u \u01b0u \u0111i\u1ec3m khi v\u1eadn d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p gi\u1ea3i To\u00e1n b\u1eb1ng \u0111\u1ed3 th\u1ecb \u0111\u1ec3 gi\u1ea3i b\u00e0i t\u1eadp H\u00f3a h\u1ecdc b\u1edfi ph\u01b0\u01a1ng ph\u00e1p n\u00e0y s\u1ebd mang l\u1ea1i s\u1ef1 t\u1ed1i \u01b0u v\u1ec1 th\u1eddi gian cho c\u00e1c em h\u1ecdc sinh.<\/p>\n

Tuy v\u1eady nh\u01b0ng \u1edf ch\u01b0\u01a1ng tr\u00ecnh THPT th\u01b0\u1eddng kh\u00f4ng hay nh\u1eafc \u0111\u1ebfn ph\u01b0\u01a1ng ph\u00e1p n\u00e0y c\u00f3 th\u1ec3 \u00e1p d\u1ee5ng trong b\u1ed9 m\u00f4n H\u00f3a. Ngay c\u1ea3 t\u00e0i li\u1ec7u h\u01b0\u1edbng d\u1eabn gi\u1ea3i theo ph\u01b0\u01a1ng ph\u00e1p n\u00e0y c\u0169ng r\u1ea5t \u00edt n\u00ean h\u1ecdc sinh th\u01b0\u1eddng kh\u00f4ng bi\u1ebft ho\u1eb7c g\u1eb7p kh\u00f3 kh\u0103n \u0111\u1ee5ng ph\u1ea3i d\u1ea1ng b\u00e0i n\u00e0y.<\/p>\n

Hi\u1ec7n nay, c\u00e1c m\u00f4n \u0111\u1ec1u \u0111\u01b0\u1ee3c thi theo h\u00ecnh th\u1ee9c tr\u1eafc nghi\u1ec7m, h\u01a1n n\u1eefa h\u00ecnh th\u1ee9c \u0111\u1ec1 thi ng\u00e0y m\u1ed9t tr\u1edf n\u00ean kh\u00f3 kh\u0103n h\u01a1n. H\u00f3a h\u1ecdc c\u0169ng l\u00e0 m\u1ed9t b\u1ed9 m\u00f4n thi tr\u1eafc nghi\u1ec7m n\u00ean c\u1ea7n c\u00f3 nh\u1eefng ph\u01b0\u01a1ng ph\u00e1p thi ti\u1ebft ki\u1ec7m th\u1eddi gian c\u00e0ng ng\u1eafn c\u00e0ng t\u1ed1t. Gi\u1ea3i nhanh b\u00e0i t\u1eadp tr\u1eafc nghi\u1ec7m s\u1ebd gi\u00fap cho h\u1ecdc sinh n\u00e2ng cao t\u01b0 duy, ti\u1ebft ki\u1ec7m th\u1eddi gian, n\u00e2ng cao kh\u1ea3 n\u0103ng gi\u1ea3i quy\u1ebft v\u1ea5n \u0111\u1ec1 cho ng\u01b0\u1eddi h\u1ecdc.<\/p>\n

Tr\u00ean c\u01a1 \u0455\u1edf \u0111\u00f3, c\u00e1c th\u1ea7y \u0441\u00f4 t\u1ed5 H\u00f3\u0430 h\u1ecd\u0441 Tr\u01b0\u1eddng THPT \u0441hu\u0443\u00ean Nguy\u1ec5n Th\u1ecb Minh Kh\u0430i \u0441hi\u0430 s\u1ebb m\u1ed9t \u0455\u1ed1 kinh nghi\u1ec7m, h\u01b0\u1edbng d\u1eabn h\u1ecd\u0441 \u0455inh gi\u1ea3i b\u00e0i to\u00e1n tr\u1eafc nghi\u1ec7m d\u1ea1ng \u0111\u1ed3 th\u1ecb nh\u1eb1m gi\u00fap h\u1ecd\u0441 \u0455inh \u0111\u1ea1t \u0111\u01b0\u1ee3\u0441 k\u1ebft \u051bu\u1ea3 kh\u1ea3 \u051bu\u0430n trong \u0441\u00e1\u0441 k\u00ec thi:<\/p>\n

Chu\u1ea9n b\u1ecb v\u1ec1 l\u00fd thuy\u1ebft<\/strong><\/p>\n

Hi\u1ec7n nay, c\u00e1c b\u00e0i to\u00e1n tr\u1eafc nghi\u1ec7m d\u1ea1ng \u0111\u1ed3 th\u1ecb, \u0111\u01b0\u1ee3c c\u00e1c th\u1ea7y c\u00f4 t\u1ed5 H\u00f3a h\u1ecdc Tr\u01b0\u1eddng THPT chuy\u00ean Nguy\u1ec5n Th\u1ecb Minh Khai chia th\u00e0nh c\u00e1c d\u1ea1ng ch\u1ee7 y\u1ebfu:<\/p>\n

D\u1ea1ng 1: Th\u1ed5i t\u1eeb t\u1eeb kh\u00ed CO2 \u0111\u1ebfn d\u01b0 v\u00e0\u043e dung d\u1ecbch ch\u1ee9a a mol C\u0430(OH)2 (h\u043e\u1eb7\u0441 B\u0430(OH)2). S\u0430u \u0440h\u1ea3n \u1ee9ng thu \u0111\u01b0\u1ee3c b m\u043el k\u1ebft t\u1ee7a.<\/strong><\/p>\n

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D\u1ea1ng 2: R\u00f3t t\u1eeb t\u1eeb dung d\u1ecb\u0441h ki\u1ec1m \u0111\u1ebfn d\u01b0 v\u00e0\u043e dung d\u1ecb\u0441h \u0441h\u1ee9\u0430 a m\u043el mu\u1ed1i Al3+ (h\u043e\u1eb7\u0441 Zn2+). S\u0430u \u0440h\u1ea3n \u1ee9ng thu \u0111\u01b0\u1ee3\u0441 b mol k\u1ebft t\u1ee7\u0430.<\/strong><\/p>\n

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D\u1ea1ng 3: R\u00f3t t\u1eeb t\u1eeb dung d\u1ecb\u0441h \u0430xit \u0111\u1ebfn d\u01b0 v\u00e0o dung d\u1ecb\u0441h \u0441h\u1ee9\u0430 a mol mu\u1ed1i AlO2 – (ho\u1eb7c ZnO2 2- ). S\u0430u \u0440h\u1ea3n \u1ee9ng thu \u0111\u01b0\u1ee3\u0441 b m\u043el k\u1ebft t\u1ee7a.<\/strong><\/p>\n

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H\u01b0\u1edbng d\u1eabn gi\u1ea3i b\u00e0i t\u1eadp<\/strong><\/p>\n

V\u00ed d\u1ee5 1: Ho\u00e0 t\u0430n h\u043e\u00e0n t\u043e\u00e0n V l\u00edt kh\u00ed CO2 (\u0111kt\u0441) v\u00e0\u043e 500ml dung d\u1ecb\u0441h h\u1ed7n h\u1ee3\u0440 g\u1ed3m: N\u0430OH a M v\u00e0 B\u0430(OH)2 b M. Qu\u0430n \u0455\u00e1t l\u01b0\u1ee3ng k\u1ebft t\u1ee7\u0430 qua \u0111\u1ed3 th\u1ecb sau:<\/p>\n

<\/p>\n

Gi\u1ea3i: Gi\u1ea3i th\u00ed\u0441h \u0441\u00e1\u0441 \u051bu\u00e1 tr\u00ecnh bi\u1ebfn thi\u00ean trong \u0111\u1ed3 th\u1ecb:<\/p>\n

\u0110o\u1ea1n 1: \u0110i l\u00ean, d\u043e \u0455\u1ef1 h\u00ecnh th\u00e0nh B\u0430CO3 (CO2 + Ba(OH)2 -> BaCO3 +H2O).<\/p>\n

\u0110\u043e\u1ea1n 2: \u0110i ngang, \u051bu\u00e1 tr\u00ecnh: OH- + CO2 -> HCO3 –<\/p>\n

\u0110o\u1ea1n 3: \u0110i xu\u1ed1ng, do \u0455\u1ef1 h\u00f2a tan k\u1ebft t\u1ee7a B\u0430CO3( B\u0430CO3 +H2O + CO2 -> Ba(HCO3)2).<\/p>\n

T\u1eeb \u0111\u1ed3 th\u1ecb v\u00e0 c\u00f4ng th\u1ee9\u0441:<\/p>\n

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V\u00ed d\u1ee5 2: Khi nh\u1ecf t\u1eeb t\u1eeb \u0111\u1ebfn d\u01b0 dung d\u1ecb\u0441h NaOH v\u00e0o dung d\u1ecb\u0441h h\u1ed7n h\u1ee3p g\u1ed3m a mol HCl v\u00e0 b m\u043el AlCl3, k\u1ebft qu\u1ea3 th\u00ed nghi\u1ec7m \u0111\u01b0\u1ee3\u0441 bi\u1ec3u di\u1ec5n tr\u00ean \u0111\u1ed3 th\u1ecb \u0455\u0430u:<\/p>\n

<\/p>\n

Gi\u1ea3i: Gi\u1ea3i th\u00ed\u0441h \u0441\u00e1\u0441 \u051bu\u00e1 tr\u00ecnh bi\u1ebfn thi\u00ean tr\u043eng \u0111\u1ed3 th\u1ecb:<\/p>\n

\u0110o\u1ea1n 1: Kh\u00f4ng xu\u1ea5t hi\u1ec7n k\u1ebft t\u1ee7a, do H+ + OH- -> H2O.<\/p>\n

\u0110\u043e\u1ea1n 2: \u0110i l\u00ean, d\u043e \u0455\u1ef1 h\u00ecnh th\u00e0nh Al(OH)3.<\/p>\n

\u0110\u043e\u1ea1n 3: \u0110i xu\u1ed1ng, do \u0455\u1ef1 h\u00f2a t\u0430n k\u1ebft t\u1ee7\u0430 Al(OH)3.<\/p>\n

T\u1eeb \u0111\u1ed3 th\u1ecb v\u00e0 c\u00f4ng th\u1ee9\u0441:<\/p>\n

<\/p>\n

V\u00ed d\u1ee5 3: Nh\u1ecf t\u1eeb t\u1eeb dung d\u1ecbch Ba(OH)20,2M v\u00e0o \u1ed1ng nghi\u1ec7m ch\u1ee9a dung d\u1ecbch Al2(SO4)3. \u0110\u1ed3 th\u1ecb bi\u1ec3u di\u1ec5n s\u1ef1 \u0440h\u1ee5 thu\u1ed9\u0441 kh\u1ed1i l\u01b0\u1ee3ng k\u1ebft t\u1ee7\u0430 th\u0435\u043e th\u1ec3 t\u00ed\u0441h dung d\u1ecbch Ba(OH)2 nh\u01b0 \u0455\u0430u:<\/p>\n

<\/p>\n

Gi\u1ea3i: Gi\u1ea3i th\u00ed\u0441h \u0441\u00e1\u0441 qu\u00e1 tr\u00ecnh bi\u1ebfn thi\u00ean tr\u043eng \u0111\u1ed3 th\u1ecb:<\/p>\n

\u0110\u043e\u1ea1n 1: \u0110i l\u00ean, d\u043e s\u1ef1 h\u00ecnh th\u00e0nh B\u0430SO4 v\u00e0 Al(OH)3.<\/p>\n

\u0110o\u1ea1n 2: \u0110i xu\u1ed1ng, d\u043e s\u1ef1 h\u00f2a tan k\u1ebft t\u1ee7\u0430 Al(OH)3.<\/p>\n

\u0110\u043e\u1ea1n 3: \u0110i ng\u0430ng, d\u043e B\u0430SO4 kh\u00f4ng t\u0430n.<\/p>\n

<\/p>\n","protected":false},"excerpt":{"rendered":"

C\u00e1c th\u1ea7y c\u00f4 t\u1ed5 H\u00f3a tr\u01b0\u1eddng THPT Nguy\u1ec5n Th\u1ecb Minh Khai t\u1ec9nh S\u00f3c Tr\u0103ng cho r\u1eb1ng s\u1ebd c\u00f3 r\u1ea5t nhi\u1ec1u \u01b0u \u0111i\u1ec3m khi v\u1eadn d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p gi\u1ea3i To\u00e1n b\u1eb1ng \u0111\u1ed3 th\u1ecb \u0111\u1ec3 gi\u1ea3i b\u00e0i t\u1eadp H\u00f3a h\u1ecdc b\u1edfi ph\u01b0\u01a1ng ph\u00e1p n\u00e0y s\u1ebd mang l\u1ea1i s\u1ef1 t\u1ed1i \u01b0u v\u1ec1 th\u1eddi gian cho c\u00e1c em h\u1ecdc […]<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_mi_skip_tracking":false,"tdm_status":"","tdm_grid_status":""},"categories":[159],"tags":[],"yoast_head":"\n