B\u00e0i 1 (trang 132 SGK H\u00f3a 12):\u00a0Cho 3,04 gam h\u1ed7n h\u1ee3p NaOH v\u00e0 KOH t\u00e1c d\u1ee5ng v\u1edbi dung d\u1ecbch axit HCl thu \u0111\u01b0\u1ee3c 4,15 gam h\u1ed7n h\u1ee3p mu\u1ed1i clorua. Kh\u1ed1i l\u01b0\u1ee3ng hidroxit trong h\u1ed7n h\u1ee3p l\u00e0:<\/strong><\/p>\n A. 1,17 g v\u00e0 2,98 g<\/p>\n B. 1,12 g v\u00e0 1,6 g<\/p>\n C. 1,12 g v\u00e0 1,92 g<\/p>\n D. 0,8 g v\u00e0 2,24 g<\/p>\n L\u1eddi gi\u1ea3i:<\/b><\/p>\n \u0110\u00e1p \u00e1n D.<\/p>\n <\/p>\n B\u00e0i 2 (trang 132 SGK H\u00f3a 12):\u00a0S\u1ee5c kh\u00ed CO2<\/sub>\u00a0(\u0111ktc) v\u00e0o dung d\u1ecbch c\u00f3 ch\u1ee9a 0,25 mol Ca(OH)2<\/sub>. Kh\u1ed1i l\u01b0\u1ee3ng k\u1ebft t\u1ee7a thu \u0111\u01b0\u1ee3c l\u00e0 :<\/strong><\/p>\n A. 10g.<\/p>\n B. 15g.<\/p>\n C. 20g.<\/p>\n D. 25g.<\/p>\n L\u1eddi gi\u1ea3i:<\/b><\/p>\n \u0110\u00e1p \u00e1n C.<\/p>\n S\u1ed1 mol CO2<\/sub>\u00a0l\u00e0 nCO2<\/sub>\u00a0= 6,72\/22,4=0,3(mol)<\/p>\n <\/p>\n CO2<\/sub>\u00a0d\u01b0 sau ph\u1ea3n \u1ee9ng l\u00e0 0,3 \u2013 0,25 = 0,05 (mol)<\/p>\n X\u1ea3y ra ph\u1ea3n \u1ee9ng<\/p>\n <\/p>\n Nh\u01b0 v\u1eady CaCO3<\/sub>\u00a0kh\u00f4ng b\u1ecb h\u00f2a tan 0,25 \u2013 0,05 = 0,2(mol)<\/p>\n Kh\u1ed1i l\u01b0\u1ee3ng k\u1ebft t\u1ee7a thu \u0111\u01b0\u1ee3c l\u00e0 m =0,2.100 = 20(g)<\/p>\n B\u00e0i 3 (trang 132 SGK H\u00f3a 12):\u00a0Ch\u1ea5t n\u00e0o sau \u0111\u00e2y c\u00f3 th\u1ec3 d\u00f9ng l\u00e0m m\u1ec1m n\u01b0\u1edbc c\u1ee9ng c\u00f3 t\u00ednh v\u0129nh c\u1eedu<\/strong><\/p>\n A. NaCl.<\/p>\n B. H2<\/sub>SO4<\/sub>.<\/p>\n C. Na2<\/sub>CO3<\/sub>.<\/p>\n D. HCl.<\/p>\n L\u1eddi gi\u1ea3i:<\/b><\/p>\n \u0110\u00e1p \u00e1n C.<\/p>\n B\u00e0i 4 (trang 132 SGK H\u00f3a 12):\u00a0C\u00f3 28,1 gam h\u1ed7n h\u1ee3p g\u1ed3m MgCO3<\/sub>\u00a0v\u00e0 BaCO3<\/sub>\u00a0trong \u0111\u00f3 MgCO3<\/sub>\u00a0chi\u1ebfm a% v\u1ec1 kh\u1ed1i l\u01b0\u1ee3ng. Cho h\u1ed7n h\u1ee3p tr\u00ean t\u00e1c d\u1ee5ng h\u1ebft v\u1edbi dung d\u1ecbch axit HCl \u0111\u1ec3 l\u1ea5y CO2<\/sub>\u00a0r\u1ed3i \u0111em s\u1ee5c v\u00e0o dung d\u1ecbch c\u00f3 ch\u00faa 0,2 mol Ca(OH)2<\/sub>\u00a0\u0111\u01b0\u1ee3c k\u1ebft t\u1ee7a B. T\u00ednh a \u0111\u1ec3 k\u1ebft t\u1ee7a B thu \u0111\u01b0\u1ee3c l\u00e0 l\u1edbn nh\u1ea5t.<\/strong><\/p>\n L\u1eddi gi\u1ea3i:<\/strong><\/p>\n <\/p>\n G\u1ecdi x, y l\u1ea7n l\u01b0\u1ee3t l\u00e0 s\u1ed1 mol c\u1ee7a MgCO3<\/sub>\u00a0v\u00e0 BaCO3<\/sub>\u00a0trong 28,1 gam h\u1ed7n h\u1ee3p.<\/p>\n \u0110\u1ec3 l\u01b0\u1ee3ng k\u1ebft t\u1ee7a CaCO3<\/sub>\u00a0thu \u0111\u01b0\u1ee3c l\u00e0 l\u1edbn nh\u1ea5t th\u00ec s\u1ed1 mol CO2<\/sub>\u00a0= s\u1ed1 mol Ca(OH)2<\/sub><\/p>\n \u2192 x + y = 0,2<\/p>\n <\/p>\n B\u00e0i 5 (trang 132 SGK H\u00f3a 12):\u00a0C\u00e1ch n\u00e0o sau \u0111\u00e2y c\u00f3 th\u1ec3 \u0111i\u1ec1u ch\u1ebf \u0111\u01b0\u1ee3c kim lo\u1ea1i Ca?<\/strong><\/p>\n A. \u0110i\u1ec7n ph\u00e2n dung d\u1ecbch c\u00f3 m\u00e0ng ng\u0103n.<\/p>\n B. \u0110i\u1ec7n ph\u00e2n CaCl2<\/sub>\u00a0n\u00f3ng ch\u1ea3y.<\/p>\n C. D\u00f9ng Al \u0111\u1ec3 kh\u1eed oxit CaO \u1edf nhi\u1ec7t \u0111\u1ed9 cao.<\/p>\n D. D\u00f9ng Ba \u0111\u1ec3 \u0111\u1ea9y Ca ra kh\u1ecfi dung d\u1ecbch CaCl2<\/sub>.<\/p>\n L\u1eddi gi\u1ea3i:<\/b><\/p>\n \u0110\u00e1p \u00e1n B.<\/p>\n B\u00e0i 6 (trang 132 SGK H\u00f3a 12):\u00a0S\u1ee5c kh\u00ed CO2<\/sub>\u00a0v\u00e0o dung d\u1ecbch Ca(OH)2<\/sub>\u00a0thu \u0111\u01b0\u1ee3c 3 gam k\u1ebft t\u1ee7a. L\u1ecdc t\u00e1ch k\u1ebft t\u1ee7a r\u1ed3i \u0111un n\u00f3ng n\u01b0\u1edbc c\u00f2n l\u1ea1i thu th\u00eam 2gam k\u1ebft t\u1ee7a n\u1eefa. Gi\u00e1 tr\u1ecb c\u1ee7a a l\u00e0:<\/strong><\/p>\n A. 0,05 mol.<\/p>\n B. 0,06 mol.<\/p>\n C. 0,07 mol.<\/p>\n D. 0,08 mol.<\/p>\n L\u1eddi gi\u1ea3i:<\/b><\/p>\n S\u1ed1 mol CaCO3<\/sub>\u00a0l\u00e0 nCaCO3<\/sub>\u00a0= 3\/100=0,03(mol)<\/p>\n <\/p>\n S\u1ed1 mol k\u1ebft t\u1ee7a th\u00eam nCaCO3<\/sub>\u00a0= 2\/100 = 0,02 (mol)<\/p>\n T\u1ed5ng s\u1ed1 mol CO2<\/sub>\u00a0= 0,03 + 2.0,02 = 0,07 (mol)<\/p>\n <\/p>\n <\/p>\n <\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":" B\u00e0i 1 (trang 132 SGK H\u00f3a 12):\u00a0Cho 3,04 gam h\u1ed7n h\u1ee3p NaOH v\u00e0 KOH t\u00e1c d\u1ee5ng v\u1edbi dung d\u1ecbch axit HCl thu \u0111\u01b0\u1ee3c 4,15 gam h\u1ed7n h\u1ee3p mu\u1ed1i clorua. Kh\u1ed1i l\u01b0\u1ee3ng hidroxit trong h\u1ed7n h\u1ee3p l\u00e0: A. 1,17 g v\u00e0 2,98 g B. 1,12 g v\u00e0 1,6 g C. 1,12 g v\u00e0 1,92 g D. […]<\/p>\n","protected":false},"author":3,"featured_media":24335,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_mi_skip_tracking":false,"tdm_status":"","tdm_grid_status":""},"categories":[1305],"tags":[1419,1420],"yoast_head":"\n