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Complete and balance the following equations: (a) ____ + ____ + ____ + ____ (b) ____ + ____ + ____…
(i)[2.0]
Complete and balance the following equations:
(a) $\text{K}_2\text{Cr}_2\text{O}_7 + \text{FeSO}_4 + \text{H}_2\text{SO}_4 \rightarrow$ ____ + ____ + ____ + ____
(b) $\text{KMnO}_4 + \text{KI} + \text{H}_2\text{SO}_4 \rightarrow$ ____ + ____ + ____ + ____
(ii)[1.0]
Explain how the colour of $\text{K}_2\text{Cr}_2\text{O}_7$ solution depends on pH of the solution.
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From ISC 2026 Specimen Chemistry Paper 1, question 13.