Question

In the following reaction, the oxidation number of Cr changes.

$$\mathrm{ClO}{\phantom{A}}_{(\mathrm{aq})}^{-}+\mathrm{Cr}(\mathrm{OH}){\phantom{A}}_{4(\mathrm{aq})}^{-}⟶\mathrm{CrO}{\phantom{A}}_{4(\mathrm{aq})}^{2-}+\mathrm{Cl}{\phantom{A}}_{(\mathrm{aq})}^{-}(\mathrm{basic})$$

Options

• +6 to +3

• +2 to +4

• +4 to +2

• +3 to +6

Answer 1

+3 to +6

Explanation: