1.
CoCl2+KNO2+CH3COOHX+H2O+KCl+CH3COOK+NO\text{CoCl}_2 + \text{KNO}_2 + \text{CH}_3\text{COOH} \longrightarrow X + \text{H}_2\text{O} + \text{KCl} + \text{CH}_3\text{COOK} + \text{NO} (unbalanced equation). Which is/are correct for XX?

Note: More than one option may be correct.