MCQ
What changes does not occur when $K_2Cr_2O_7$ react with $H_2O_2$ solution
- AOrange colour of solution turns blue
- ✓$O.S.$ of $Cr$ atom decreases
- C$O.S.$ of $Cr$ atom remains constant
- DNone of these
✓
Answer
Correct option: B.
$O.S.$ of $Cr$ atom decreases
b
$\mathop {{K_2}C{r_2}{O_7}}\limits_{\left( { + 6} \right)} + {H_2}{O_2} \to \mathop {\mathop {Cr{O_5}}\limits^{\left( { + 6} \right)} }\limits_{\left( {Blue\,Chromate} \right)} $
$\mathop {{K_2}C{r_2}{O_7}}\limits_{\left( { + 6} \right)} + {H_2}{O_2} \to \mathop {\mathop {Cr{O_5}}\limits^{\left( { + 6} \right)} }\limits_{\left( {Blue\,Chromate} \right)} $
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