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{"id":24734,"date":"2018-03-30T15:48:20","date_gmt":"2018-03-30T08:48:20","guid":{"rendered":"https:\/\/lop12.edu.vn\/?p=24734"},"modified":"2018-03-30T15:48:33","modified_gmt":"2018-03-30T08:48:33","slug":"chuong-7","status":"publish","type":"post","link":"https:\/\/lop12.edu.vn\/chuong-7\/","title":{"rendered":"Ch\u01b0\u01a1ng 7 – B\u00e0i 43: \u0110\u1ed3ng v\u00e0 m\u1ed9t s\u1ed1 h\u1ee3p ch\u1ea5t c\u1ee7a \u0111\u1ed3ng"},"content":{"rendered":"

B\u00e0i 1 (trang 213 sgk H\u00f3a 12 n\u00e2ng cao):\u00a0Ph\u1ea3n \u1ee9ng n\u00e0o sau \u0111\u00e2y x\u1ea3y ra?<\/strong><\/p>\n

A.Cu2+<\/sup>\u00a0+ 2Ag \u2192 Cu + 2Ag+<\/sup><\/p>\n

B. Cu + Pb2+<\/sup>\u00a0\u2192 Cu2+<\/sup>\u00a0+ Pb<\/p>\n

C. Cu + 2Fe3+<\/sup>\u00a0\u2192 Cu2+<\/sup>\u00a0+ 2Fe2+<\/sup><\/p>\n

D. Cu + 2Fe3+<\/sup>\u00a0\u2192 Cu2+<\/sup>\u00a0+ 2Fe<\/p>\n

L\u1eddi gi\u1ea3i:<\/b><\/p>\n

\u0110\u00e1p \u00e1n C<\/p>\n

B\u00e0i 2 (trang 213 sgk H\u00f3a 12 n\u00e2ng cao):\u00a0Cho s\u01a1 \u0111\u1ed3 ph\u1ea3n \u1ee9ng sau: Cu + HNO3<\/sub>\u00a0\u2192 Cu(NO3<\/sub>)2<\/sub>\u00a0+ NO + H2<\/sub>O<\/strong><\/p>\n

Sau khi l\u1eadp ph\u01b0\u01a1ng tr\u00ecnh h\u00f3a h\u1ecdc c\u1ee7a ph\u1ea3n \u1ee9ng, ta c\u00f3 s\u1ed1 nguy\u00ean t\u01b0 Cu b\u1ecb oxi h\u00f3a v\u00e0 s\u1ed1 ph\u00e2n t\u1eed HNO3<\/sub>\u00a0b\u1ecb kh\u1eed l\u00e0:<\/strong><\/p>\n

A. 1 v\u00e0 6<\/p>\n

B. 3 v\u00e0 6<\/p>\n

C. 3 v\u00e0 2<\/p>\n

D. 3 v\u00e0 8<\/p>\n

L\u1eddi gi\u1ea3i:<\/b><\/p>\n

\u0110\u00e1p \u00e1n C<\/p>\n

B\u00e0i 3 (trang 213 sgk H\u00f3a 12 n\u00e2ng cao):\u00a0a. T\u1eeb Cu v\u00e0 nh\u1eefng h\u00f3a ch\u1ea5t c\u1ea7n thi\u1ebft kh\u00e1c, h\u00e3y gi\u1edbi thi\u1ec7u c\u00e1c ph\u01b0\u01a1ng ph\u00e1p \u0111i\u1ec1u ch\u1ebf dung d\u1ecbch CuCl2<\/sub>. Vi\u1ebft c\u00e1c ph\u01b0\u01a1ng tr\u00ecnh h\u00f3a h\u1ecdc<\/strong><\/p>\n

b. T\u1eeb h\u1ed7n h\u1ee3p c\u00e1c kim lo\u1ea1i Ag v\u00e0 Cu, h\u00e3y tr\u00ecnh b\u00e0y 3 ph\u01b0\u01a1ng ph\u00e1p h\u00f3a h\u1ecdc t\u00e1ch ri\u00eang Ag v\u00e0 Cu. Vi\u1ebft c\u00e1c ph\u01b0\u01a1ng tr\u00ecnh h\u00f3a h\u1ecdc.<\/strong><\/p>\n

L\u1eddi gi\u1ea3i:<\/strong><\/p>\n

a. \u0110\u1ec3 t\u1ea1o ra mu\u1ed1i CuCl2<\/sub>\u00a0t\u1eeb Cu:<\/p>\n

– Cu t\u00e1c d\u1ee5ng v\u1edbi Cl2<\/sub>\u00a0r\u1ed3i h\u00f2a tan v\u00e0o H2<\/sub>O.<\/p>\n

– Cu t\u00e1c d\u1ee5ng v\u1edbi axit c\u00f3 m\u1eb7t oxi.<\/p>\n

2Cu + 4HCl + O2<\/sub>\u00a0\u2192 2CuCl2<\/sub>\u00a0+ 2H2<\/sub>O<\/p>\n

t\u00e1c d\u1ee5ng v\u1edbi mu\u1ed1i:<\/p>\n

Cu + 2FeCl3<\/sub>\u2192 CuCl2<\/sub>\u00a0+ 2FeCl2<\/sub>.<\/p>\n

b. 3 ph\u01b0\u01a1ng ph\u00e1p t\u00e1ch ri\u00eang Ag v\u00e0 Cu t\u1eeb h\u1ed7n h\u1ee3p:<\/p>\n

* H\u00f2a tan h\u1ed7n h\u1ee3p b\u1eb1ng mu\u1ed1i Fe(III); Cu tan c\u00f2n Ag kh\u00f4ng tan, t\u00e1ch ri\u00eang Cu + 2Fe3+<\/sup>\u2192Cu2+<\/sup>\u00a0+ 2Fe2+<\/sup><\/p>\n

Cho s\u1eaft kim lo\u1ea1i v\u00e0o dung d\u1ecbch thu \u0111\u01b0\u1ee3c \u0111\u1ed3ng.<\/p>\n

Fe + Cu2+<\/sup>\u00a0\u2192 Fe2+<\/sup>\u00a0+ Cu<\/p>\n

* H\u00f2a tan h\u1ed7n h\u1ee3p b\u1eb1ng dung d\u1ecbch HCl c\u00f3 s\u1ee5c kh\u00ed oxi, Cu tan c\u00f2n Ag kh\u00f4ng tan: 2Cu + 4HCl + O2<\/sub>\u00a0\u2192 2CuCl2<\/sub>\u00a0+ 2H2<\/sub>O<\/p>\n

\u0110i\u1ec7n ph\u00e2n dung d\u1ecbch thu \u0111\u01b0\u1ee3c \u0111\u1ed3ng<\/p>\n

CuCl2<\/sub>\u00a0(\u0111pdd) \u2192 Cu + Cl2<\/sub><\/p>\n

* \u0110\u1ed1t ch\u00e1y h\u1ed7n h\u1ee3p trong kh\u00f4ng kh\u00ed, s\u1ea3n ph\u1ea9m h\u00f2a tan b\u1eb1ng dung d\u1ecbch HCl:<\/p>\n

2Cu + O2<\/sub>\u00a0\u2192 2CuO<\/p>\n

CuO + 2HCl \u2192 CuCl2<\/sub>\u00a0+ H2<\/sub>O<\/p>\n

L\u1ecdc l\u1ea5y Ag kh\u00f4ng tan, Ph\u1ea7n dung d\u1ecbch \u0111em \u0111i\u1ec7n ph\u00e2n:<\/p>\n

CuCl2<\/sub>\u00a0(\u0111pdd) \u2192 Cu + Cl2<\/sub><\/p>\n

B\u00e0i 4 (trang 213 sgk H\u00f3a 12 n\u00e2ng cao):\u00a0H\u1ed7n h\u1ee3p b\u1ed9t A c\u00f3 3 kim lo\u1ea1i Fe, Ag v\u00e0 Cu. Ng\u00e2m h\u1ed7n h\u1ee3p A trong dung d\u1ecbch H ch\u1ec9 ch\u1ee9a m\u1ed9t ch\u1ea5t, khu\u1ea5y k\u0129 cho \u0111\u1ebfn khi ph\u1ea3n \u1ee9ng k\u1ebft th\u00fac, nh\u1eadn th\u1ea5y ch\u1ec9 c\u00f3 s\u1eaft v\u00e0 \u0111\u1ed3ng trong h\u1ed7n h\u1ee3p tan h\u1ebft v\u00e0 c\u00f2n l\u1ea1i m\u1ed9t kh\u1ed1i l\u01b0\u1ee3ng Ag \u0111\u00fang b\u1eb1ng kh\u1ed1i l\u01b0\u1ee3ng Ag v\u1ed1n c\u00f3 trong h\u1ed7n h\u1ee3p.<\/strong><\/p>\n

a. H\u00e3y d\u1ef1 \u0111o\u00e1n ch\u1ea5t B.<\/p>\n

b. N\u1ebfu sau khi ph\u1ea3n \u1ee9ng k\u1ebft th\u00fac, thu \u0111\u01b0\u1ee3c kh\u1ed1i l\u01b0\u1ee3ng Ag nhi\u1ec1u h\u01a1n kh\u1ed1i l\u01b0\u1ee3ng Ag v\u1ed1n c\u00f3 trong h\u1ed7n h\u1ee3p A th\u00ec ch\u1ea5t c\u00f3 trong dung d\u1ecbch B c\u00f3 th\u1ec3 l\u00e0 ch\u1ea5t n\u00e0o?<\/p>\n

Vi\u1ebft t\u1ea5t c\u00e1 c\u00e1c ph\u01b0\u01a1ng tr\u00ecnh h\u00f3a h\u1ecdc.<\/p>\n

L\u1eddi gi\u1ea3i:<\/b><\/p>\n

a. Ch\u1ea5t trong h\u1ed7n h\u1ee3p B c\u00f3 kh\u1ea3 n\u0103ng h\u00f2a tan Fe, Cu m\u00e0 kh\u00f4ng h\u00f2a tan Ag c\u0169ng kh\u00f4ng sinh ra Ag => l\u00e0 mu\u1ed1i s\u1eaft (III).<\/p>\n

b. N\u1ebfu l\u01b0\u1ee3ng b\u1ea1c sau ph\u1ea3n \u1ee9ng nhi\u1ec1u h\u01a1n t\u1ee9c l\u00e0 ph\u1ea3n \u1ee9ng c\u00f3 sinh ra Ag v\u1eady ch\u1ea5t trong B l\u00e0 AgNO3<\/sub>.<\/p>\n

Fe + 2Fe3+<\/sup>\u00a0\u2192 3Fe2+<\/sup><\/p>\n

Cu + 2Fe3+<\/sup>\u00a0\u2192 Cu2+<\/sup>\u00a0+ 2Fe2+<\/sup><\/p>\n

Fe + 2AgNO3<\/sub>\u00a0\u2192 Fe(NO3<\/sub>)2<\/sub>\u00a0+ 2Ag<\/p>\n

Cu + 2AgNO3<\/sub>\u00a0\u2192 Cu(NO3<\/sub>)2<\/sub>\u00a0+ 2Ag<\/p>\n

C\u00f3 th\u1ec3 Fe(NO3<\/sub>)2<\/sub>\u00a0+ AgNO3<\/sub>\u00a0\u2192 Fe(NO3<\/sub>)2<\/sub>\u00a0+ Ag<\/p>\n

B\u00e0i 5 (trang 213 sgk H\u00f3a 12 n\u00e2ng cao):\u00a0a. Cho m\u1ed9t \u00edt b\u1ed9t s\u1eaft v\u00e0o dung d\u1ecbch \u0111\u1ed3ng (II) sunfat. nh\u1eadn th\u1ea5y m\u00e0u xanh c\u1ee7a dung d\u1ecbch nh\u1ea1t d\u1ea7n. Nh\u01b0ng cho m\u1ed9t \u00edt b\u1ed9t \u0111\u1ed3ng v\u00e0o dung d\u1ecbch s\u1eaft (III) sunfat nh\u1eadn th\u1ea5y m\u00e0u v\u00e0ng n\u00e2u c\u1ee7a dung d\u1ecbch nh\u1ea1t d\u1ea7n v\u00e0 sau \u0111\u00f3 l\u1ea1i c\u00f3 m\u00e0u xanh. H\u00e3y gi\u1ea3i th\u00edch hi\u1ec7n t\u01b0\u1ee3ng v\u00e0 vi\u1ebft c\u00e1c ph\u01b0\u01a1ng tr\u00ecnh h\u00f3a h\u1ecdc.<\/strong><\/p>\n

b. \u0110i\u1ec7n ph\u00e2n dung d\u1ecbch \u0111\u1ed3ng (II) sunfat b\u1eb1ng \u0111i\u1ec7n c\u1ef1c tr\u01a1 (graphit) nh\u1eadn th\u1ea5y m\u00e0u xanh c\u1ee7a dung d\u1ecbch nh\u1ea1t d\u1ea7n cho \u0111\u1ebfn kh\u00f4ng m\u00e0u. Nh\u01b0ng thay c\u00e1c \u0111i\u1ec7n c\u1ef1c graphit b\u1eb1ng c\u00e1c \u0111i\u1ec7n c\u1ef1c \u0111\u1ed3ng, nh\u1eadn th\u1ea5y m\u00e0u xanh c\u1ee7a dung d\u1ecbch h\u1ea7u nh\u01b0 kh\u00f4ng thay \u0111\u1ed5i. H\u00e3y gi\u1ea3i th\u00edch hi\u1ec7n t\u01b0\u1ee3ng v\u00e0 vi\u1ebft c\u00e1c ph\u01b0\u01a1ng tr\u00ecnh h\u00f3a h\u1ecdc.<\/strong><\/p>\n

L\u1eddi gi\u1ea3i:<\/b><\/p>\n

a. Fe + CuSO4<\/sub>\u00a0\u2192 FeSO4<\/sub>\u00a0+ Cu<\/p>\n

M\u00e0u xanh nh\u1ea1t d\u1ea7n do l\u01b0\u1ee3ng CuSO4<\/sub>\u00a0gi\u1ea3m d\u1ea7n trong qu\u00e1 tr\u00ecnh ph\u00e0n \u1ee9ng.<\/p>\n

Cu + Fe2<\/sub>(SO4<\/sub>)3<\/sub>\u00a0\u2192 CuSO4<\/sub>\u00a0+ 2FeSO4<\/sub><\/p>\n

M\u00e0u n\u00e2u m\u00e0u xanh<\/p>\n

M\u00e0u n\u00e2u nh\u1ea1t d\u1ea7n (Fe2<\/sub>(SO4<\/sub>)3<\/sub>\u00a0gi\u1ea3m d\u1ea7n) v\u00e0 m\u00e0u xanh xu\u1ea5t hi\u1ec7n do CuSO4<\/sub>\u00a0sinh ra<\/p>\n

b. \u0110i\u1ec7n ph\u00e2n dung d\u1ecbch CuSO4<\/sub>\u00a0v\u1edbi \u0111i\u1ec7n c\u1ef1c tr\u01a1<\/p>\n

Catot<\/p>\n

Cu2+<\/sup>\u00a0+ 2e \u2192 Cu<\/p>\n

Anot<\/p>\n

2H2<\/sub>O \u2192 O2<\/sub>\u00a0+ 4H+<\/sup>\u00a0+ 4e<\/p>\n

Ph\u01b0\u01a1ng tr\u00ecnh 2CuSO4<\/sub>\u00a0+ 2H2<\/sub>O \u2192 2Cu + O2<\/sub>\u00a0+ 2H2<\/sub>SO4<\/sub><\/p>\n

M\u00e0u xanh nh\u1ea1t d\u1ea7n \u0111\u1ebfn kh\u00f4ng m\u00e0u (CuSO4<\/sub>\u00a0b\u1ecb \u0111i\u1ec7n ph\u00e2n h\u1ebft)<\/p>\n

* \u0110i\u1ec7n ph\u00e2n dung d\u1ecbch CuSO4<\/sub>\u00a0v\u1edbi anot \u0111\u1ed3ng<\/p>\n

Catot<\/p>\n

Cu2+<\/sup>\u00a0+ 2e \u2192 Cu<\/p>\n

Anot<\/p>\n

Cu \u2192 2e + Cu2+<\/sup><\/p>\n

X\u1ea3y ra hi\u1ec7n t\u01b0\u1ee3ng anot tan :<\/p>\n

Ph\u01b0\u01a1ng tr\u00ecnh : Cuanot + Cu2+<\/sup>\u00a0dd \u2192 Cu2+<\/sup>\u00a0dd + Cucatot<\/p>\n

N\u1ed3ng \u0111\u1ed9 Cu2+<\/sup>\u00a0kh\u00f4ng thay \u0111\u1ed5i n\u00ean m\u00e0u c\u1ee7a dung d\u1ecbch kh\u00f4ng \u0111\u1ed5i<\/p>\n

B\u00e0i 6 (trang 213 sgk H\u00f3a 12 n\u00e2ng cao):\u00a0H\u1ee3p kim Cu-Al \u0111\u01b0\u1ee3c c\u1ea5u t\u1ea1o b\u1eb1ng tinh th\u1ec3 h\u1ee3p ch\u1ea5t h\u00f3a h\u1ecdc, trong \u0111\u00f3 c\u00f3 13,2% Al. H\u00e3y x\u00e1c \u0111\u1ecbnh c\u00f4ng th\u1ee9c h\u00f3a h\u1ecdc c\u1ee7a h\u1ee3p ch\u1ea5t.<\/strong><\/p>\n

L\u1eddi gi\u1ea3i:<\/b><\/p>\n

\u0110\u1eb7t c\u00f4ng ch\u1ee9c Alx<\/sub>Cuy<\/sub><\/p>\n

=> x : y = (13,2 : 27 ) : ([100 \u2013 13,2 ]: 64) = 0,489 : 1,356 = 1;2,774 = 4 : 11<\/p>\n

C\u00f4ng th\u1ee9c tinh th\u1ec3 Al4<\/sub>Cu11<\/sub><\/p>\n

B\u00e0i 7 (trang 213 sgk H\u00f3a 12 n\u00e2ng cao):\u00a0H\u00e3y x\u00e1c \u0111\u1ecbnh h\u00e0m l\u01b0\u1ee3ng Sn c\u00f3 trong h\u1ee3p kim Cu-Sn. Bi\u1ebft r\u1eb1ng trong h\u1ee3p kim n\u00e0y, \u1ee9ng v\u1edbi 1 mol Sn th\u00ec c\u00f3 5 mol Cu.<\/strong><\/p>\n

L\u1eddi gi\u1ea3i:<\/b><\/p>\n

%Sn = 119 : (110 + 5 x 64) x 100 = 27,1%<\/p>\n

 <\/p>\n

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

B\u00e0i 1 (trang 213 sgk H\u00f3a 12 n\u00e2ng cao):\u00a0Ph\u1ea3n \u1ee9ng n\u00e0o sau \u0111\u00e2y x\u1ea3y ra? A.Cu2+\u00a0+ 2Ag \u2192 Cu + 2Ag+ B. Cu + Pb2+\u00a0\u2192 Cu2+\u00a0+ Pb C. Cu + 2Fe3+\u00a0\u2192 Cu2+\u00a0+ 2Fe2+ D. Cu + 2Fe3+\u00a0\u2192 Cu2+\u00a0+ 2Fe L\u1eddi gi\u1ea3i: \u0110\u00e1p \u00e1n C B\u00e0i 2 (trang 213 sgk H\u00f3a 12 n\u00e2ng cao):\u00a0Cho s\u01a1 \u0111\u1ed3 […]<\/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":[1306],"tags":[1429,1430],"yoast_head":"\nCh\u01b0\u01a1ng 7 - B\u00e0i 43: \u0110\u1ed3ng v\u00e0 m\u1ed9t s\u1ed1 h\u1ee3p ch\u1ea5t c\u1ee7a \u0111\u1ed3ng<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/lop12.edu.vn\/chuong-7\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Ch\u01b0\u01a1ng 7 - B\u00e0i 43: \u0110\u1ed3ng v\u00e0 m\u1ed9t s\u1ed1 h\u1ee3p ch\u1ea5t c\u1ee7a \u0111\u1ed3ng\" \/>\n<meta property=\"og:description\" content=\"B\u00e0i 1 (trang 213 sgk H\u00f3a 12 n\u00e2ng cao):\u00a0Ph\u1ea3n \u1ee9ng n\u00e0o sau \u0111\u00e2y x\u1ea3y ra? A.Cu2+\u00a0+ 2Ag \u2192 Cu + 2Ag+ B. Cu + Pb2+\u00a0\u2192 Cu2+\u00a0+ Pb C. Cu + 2Fe3+\u00a0\u2192 Cu2+\u00a0+ 2Fe2+ D. 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