ChemistryNEET 2023Oxidation number and balancing redox equations

Redox Reactions

On balancing the given redox reaction,

$a C r_{2} O_{7}^{2 -} + b S O_{3}^{2 -} (aq) + c H^{+} (aq) \to 2 a C r^{3 +} (aq) + b S O_{4}^{2 -} (aq) + \frac{c}{2} H_{2} O (l)$

the coefficients $a$ , $b$ and $c$ are found to be, respectively:

You have the answer. The worked solution — and why the other three were written — is part of a paid pack.

More from this chapter in past papers