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Answer the following.
Complete and balance the following reactions: (a) (b)
Complete and balance the following reactions:
(a) $\text{K}_2\text{Cr}_2\text{O}_7 + \text{H}_2\text{SO}_4 + \text{KI} \longrightarrow \underline{\hspace{2em}} + \underline{\hspace{2em}} + \underline{\hspace{2em}} + \underline{\hspace{2em}}$
(b) $\text{KMnO}_4 + \text{H}_2\text{SO}_4 + \text{FeSO}_4 \longrightarrow \underline{\hspace{2em}} + \underline{\hspace{2em}} + \underline{\hspace{2em}} + \underline{\hspace{2em}}$
Answer
Answer
AI(a) $\text{K}_2\text{Cr}_2\text{O}_7 + 7\text{H}_2\text{SO}_4 + 6\text{KI} \longrightarrow \text{Cr}_2(\text{SO}_4)_3 + 4\text{K}_2\text{SO}_4 + 3\text{I}_2 + 7\text{H}_2\text{O}$
(b) $2\text{KMnO}_4 + 8\text{H}_2\text{SO}_4 + 10\text{FeSO}_4 \longrightarrow \text{K}_2\text{SO}_4 + 2\text{MnSO}_4 + 5\text{Fe}_2(\text{SO}_4)_3 + 8\text{H}_2\text{O}$
From ISC 2026 Chemistry Paper 1, question 13(i).
Check your working with the Chemical equation balancer: balance any equation, ionic and redox ones too, with the atom count on each side.