Đáp án: Viết phương trình Cu ->A->B->C->D - Cu → CuO → CuCl_2 → Cu(OH)_2 → CuSO_4 1) 2Cu + O_2 →(t^o) 2CuO 2) CuO + 2HCl → CuCl_2 + H_2O 3) CuCl_2 + 2NaOH → Cu(OH)_2↓ + 2NaCl 4) Cu(OH)_2 + H_2SO_4 → CuSO_4 + 2H_2O (Dạng toán này có tên là tự chọn chất)

Đáp án Giải thích các bước giải A CuO B CuCl_2 C Cu(NO_3)_2 D Cu(OH)_2 2Cu+O_2→ 2CuO CuO+2HCl→ CuCl_2+H_2O CuCl_2+2AgNO_3→ Cu(NO_3)_2+2AgCl Cu(NO_3)_2+2NaOH→ Cu(OH)_2+2NaNO_3

thaonguyen893

1 năm trước

Viết phương trình Cu ->A->B->C->D

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nhatkt2007

1 năm trước

$Cu → CuO → CuCl_2 → Cu(OH)_2 → CuSO_4$

$1) 2Cu + O_2 \xrightarrow[]{t^o} 2CuO$

$2) CuO + 2HCl → CuCl_2 + H_2O$

$3) CuCl_2 + 2NaOH → Cu(OH)_2↓ + 2NaCl$

$4) Cu(OH)_2 + H_2SO_4 → CuSO_4 + 2H_2O$

(Dạng toán này có tên là tự chọn chất)

buiviet2932006

1 năm trước

Đáp án:

Giải thích các bước giải:

$A:\ CuO\\ B:\ CuCl_2\\ C:\ Cu(NO_3)_2\\ D:\ Cu(OH)_2\\ 2Cu+O_2\to 2CuO\\ CuO+2HCl\to CuCl_2+H_2O\\ CuCl_2+2AgNO_3\to Cu(NO_3)_2+2AgCl\\ Cu(NO_3)_2+2NaOH\to Cu(OH)_2+2NaNO_3$

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