When `K_2 CrO_4 ` is added to `CuSO_4` solution, there is formation of `CuCrO_4` , as well as `CuCr_2 O_2`. Formation of `CuCr_2 O_7` is due to

Options

A. basic nature of `CuSO_4` solution which converts `CrO_(4)^(2-)` to `Cr_2O_(7)^(2-)`
B. acidic nature of `CuSO_4` solution which converts ` CrO_(4)^(2-) ` to ` CrO_(7)^(2-)`
C. `CuSO_(4)` has the typical property of converting `CuCrO_4` is formed to `CuCr_2 O_7`
D. no `CuCr_2 O_7` is formed

Answer

B

Explanation

`CuSO_4 + 2H_2 O hArr Cu(OH)_2 +H_2 SO_4`
` 2CrO_(4)^(2-) + 2H^(+) hArr Cr_(2) O_(7)^(2-) +H_2 O`