Question

K2Cr2O7 react with hydrazine to form products the oxidation state of cr in the product will be​

Answer 1

The oxidation state of cr in the product will be​ "+ 6".

Explanation:

The chemical reaction is

$K_{2} Cr_{2} O_{7} + H_{2} SO_{4}  + 4H_{2}O_{2} →2CrO_{5}+  K_{2} SO_{4} + 5H_{2} O$

$4CrO_{5}+ 6H_{2} SO_{4}= 2Cr_{2}(SO_{4})_{3} + 6H_{2}O + 7[O_{2}$

Here, Cr has + 6 oxidation state.

Hence, the oxidation state of cr in the product will be​ + 6.