MCQ
When ${K_2}C{r_2}{O_7}$ is converted to ${K_2}Cr{O_4},$ the change in the oxidation state of chromium is
- ✓$0$
- B$6$
- C$4$
- D$3$
✓
Answer
Correct option: A.
$0$
(a) $\mathop {{K_2}C{r_2}{O_7}}\limits^{ + 6} \to \mathop {{K_2}Cr{O_4}}\limits^{ + 6} $.In this reaction no change in oxidation state of chromium.
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