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{"id":24303,"date":"2018-03-28T22:41:11","date_gmt":"2018-03-28T15:41:11","guid":{"rendered":"https:\/\/lop12.edu.vn\/?p=24303"},"modified":"2018-03-28T22:41:11","modified_gmt":"2018-03-28T15:41:11","slug":"chuong-7-bai-36-so-luoc-ve-niken-kem-chi-thiec","status":"publish","type":"post","link":"https:\/\/lop12.edu.vn\/chuong-7-bai-36-so-luoc-ve-niken-kem-chi-thiec\/","title":{"rendered":"Ch\u01b0\u01a1ng 7 – B\u00e0i 36: S\u01a1 l\u01b0\u1ee3c v\u1ec1 niken, k\u1ebdm, ch\u00ec, thi\u1ebfc"},"content":{"rendered":"

B\u00e0i 1 (trang 163 SGK H\u00f3a 12):\u00a0D\u00e3y n\u00e0o s\u1eafp x\u1ebfp theo th\u1ee9 t\u1ef1 t\u00ednh kh\u1eed t\u0103ng d\u1ea7n<\/strong><\/p>\n

A. Pb, Ni, Sn, Zn<\/p>\n

B. Pb, Sn, Ni, Zn<\/p>\n

C. Ni, Sn, Zn, Pb<\/p>\n

D. Ni, Zn, Pb, Sn<\/p>\n

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

\u0110\u00e1p \u00e1n B.<\/p>\n

B\u00e0i 2 (trang 163 SGK H\u00f3a 12):\u00a0S\u1eaft t\u00e2y l\u00e0 s\u1eaft \u0111\u01b0\u1ee3c ph\u1ee7 l\u00ean b\u1ec1 m\u1eb7t b\u1edfi kim lo\u1ea1i n\u00e0o sau \u0111\u00e2y?<\/strong><\/p>\n

A. Zn.<\/p>\n

B. Ni.<\/p>\n

C. Sn.<\/p>\n

D. Cr.<\/p>\n

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

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

B\u00e0i 3 (trang 163 SGK H\u00f3a 12):\u00a0Cho 32 gam h\u1ed7n h\u1ee3p g\u1ed3m MgO, Fe2<\/sub>O3<\/sub>\u00a0v\u00e0 CuO t\u00e1c d\u1ee5ng v\u1eeba \u0111\u1ee7 v\u1edbi 300 ml dung d\u1ecbch H2<\/sub>SO4<\/sub>\u00a02M. Kh\u1ed1i l\u01b0\u1ee3ng mu\u1ed1i thu \u0111\u01b0\u1ee3c l\u00e0 :<\/strong><\/p>\n

A. 60 gam.<\/p>\n

B. 80 gam.<\/p>\n

C. 85 gam.<\/p>\n

D. 90 gam.<\/p>\n

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

\u0110\u00e1p \u00e1n B.<\/p>\n

C\u00e1c ph\u01b0\u01a1ng tr\u00ecnh ph\u1ea3n \u1ee9ng :<\/p>\n

G\u1ecdi x, y, z l\u1ea7n l\u01b0\u1ee3t l\u00e0 s\u1ed1 mol c\u1ee7a MgO, Fe2<\/sub>O3<\/sub>\u00a0v\u00e0 CuO<\/p>\n

MgO + H2<\/sub>SO4<\/sub>\u00a0\u2192 MgSO4<\/sub>\u00a0+ H2<\/sub>O<\/p>\n

Fe2<\/sub>O3<\/sub>\u00a0+ 3H2<\/sub>SO4<\/sub>\u00a0\u2192 Fe2<\/sub>(SO4<\/sub>)3<\/sub>\u00a0+ 3H2<\/sub>O<\/p>\n

CuO + H2<\/sub>SO4<\/sub>\u00a0\u2192 CuSO4<\/sub>\u00a0+ H2<\/sub>O<\/p>\n

S\u1ed1 mol H2<\/sub>SO4<\/sub>\u00a0= 0,3.2 = 0,6(mol) = (x + 3y + z)<\/p>\n

Kh\u1ed1i l\u01b0\u1ee3ng c\u00e1c oxit:<\/p>\n

32 = x(24 + 16) + y(56.2 + 16.3) + x(64 + 16)<\/p>\n

32 = (24x + 56.2y + 24z) + 16(x + 3y + z)<\/p>\n

\u2192 (24x + 56.2y + 24z) = 22,4<\/p>\n

Kh\u1ed1i l\u01b0\u1ee3ng mu\u1ed1i thu \u0111\u01b0\u1ee3c l\u00e0 :<\/p>\n

m = mMgSO4<\/sub>\u00a0+ mFe2(SO4)3<\/sub>\u00a0+ mCuSO4<\/sub><\/p>\n

m = x(24 + 96) + y(56.2 + 96.3) + x(64 + 96)<\/p>\n

m = (24x + 2.56y + 64z) + 96(x + 3y + z)<\/p>\n

m = 22,4 + 96.0,6 = 80 (gam)<\/p>\n

B\u00e0i 4 (trang 163 SGK H\u00f3a 12):\u00a0H\u1ee3p ch\u1ea5t n\u00e0o sau \u0111\u00e2y kh\u00f4ng c\u00f3 t\u00ednh ch\u1ea5t l\u01b0\u1ee1ng t\u00ednh ?<\/strong><\/p>\n

A. ZnO<\/p>\n

B. Zn(OH)2<\/sub><\/p>\n

C. ZnSO4<\/sub><\/p>\n

D. Zn(HCO3<\/sub>)2<\/sub><\/p>\n

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

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

B\u00e0i 5 (trang 163 SGK H\u00f3a 12):\u00a0Cho dung d\u1ecbch NaOH v\u00e0o dung d\u1ecbch mu\u1ed1i sunfat c\u1ee7a kim lo\u1ea1i h\u00f3a tr\u1ecb II th\u1ea5y sinh ra k\u1ebft t\u1ee7a tan trong dung d\u1ecbch NaOH d\u01b0. \u0110\u00f3 l\u00e0 mu\u1ed1i n\u00e0o sau \u0111\u00e2y?<\/strong><\/p>\n

A. MgSO4<\/sub><\/p>\n

B. CaSO4<\/sub><\/p>\n

C. MnSO4<\/sub><\/p>\n

D. ZnSO4<\/sub><\/p>\n

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

\u0110\u00e1p \u00e1n D.<\/p>\n

PTHH:<\/p>\n

2NaOH + ZnSO4<\/sub>\u00a0\u2192 Na2<\/sub>SO4<\/sub>\u00a0+ Zn(OH)2<\/sub>\u2193<\/p>\n

Zn(OH)2<\/sub>\u00a0+ 2NaOH \u2192 Na2<\/sub>ZnO2<\/sub>\u00a0+ 2H2<\/sub>O<\/p>\n

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

B\u00e0i 1 (trang 163 SGK H\u00f3a 12):\u00a0D\u00e3y n\u00e0o s\u1eafp x\u1ebfp theo th\u1ee9 t\u1ef1 t\u00ednh kh\u1eed t\u0103ng d\u1ea7n A. Pb, Ni, Sn, Zn B. Pb, Sn, Ni, Zn C. Ni, Sn, Zn, Pb D. Ni, Zn, Pb, Sn L\u1eddi gi\u1ea3i: \u0110\u00e1p \u00e1n B. B\u00e0i 2 (trang 163 SGK H\u00f3a 12):\u00a0S\u1eaft t\u00e2y l\u00e0 s\u1eaft \u0111\u01b0\u1ee3c ph\u1ee7 l\u00ean […]<\/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":[1305],"tags":[1419,1420],"yoast_head":"\nCh\u01b0\u01a1ng 7 - B\u00e0i 36: S\u01a1 l\u01b0\u1ee3c v\u1ec1 niken, k\u1ebdm, ch\u00ec, thi\u1ebfc<\/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-bai-36-so-luoc-ve-niken-kem-chi-thiec\/\" \/>\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 36: S\u01a1 l\u01b0\u1ee3c v\u1ec1 niken, k\u1ebdm, ch\u00ec, thi\u1ebfc\" \/>\n<meta property=\"og:description\" content=\"B\u00e0i 1 (trang 163 SGK H\u00f3a 12):\u00a0D\u00e3y n\u00e0o s\u1eafp x\u1ebfp theo th\u1ee9 t\u1ef1 t\u00ednh kh\u1eed t\u0103ng d\u1ea7n A. Pb, Ni, Sn, Zn B. Pb, Sn, Ni, Zn C. Ni, Sn, Zn, Pb D. Ni, Zn, Pb, Sn L\u1eddi gi\u1ea3i: \u0110\u00e1p \u00e1n B. 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