Hot, acidified potassium permanganate oxidises toluene to benzoic acid: 5C₆H₅CH₃ + 6MnO₄⁻ + 18H⁺ →…

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Hot, acidified potassium permanganate oxidises toluene to benzoic acid: $5\text{C}_6\text{H}_5\text{CH}_3 + 6\text{MnO}_4^- + 18\text{H}^+ \rightarrow 5\text{C}_6\text{H}_5\text{COOH} + 6\text{Mn}^{2+} + 14\text{H}_2\text{O}$ . A sample of $2.76\ \text{g}$ of toluene, with a molar mass of $92.0\ \text{g/mol}$ , is oxidised completely. Benzoic acid has a molar mass of $122\ \text{g/mol}$ . Find the moles of toluene, the moles of permanganate needed and the mass of benzoic acid formed.

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