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Amount of substance

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Question 51

What is the minimum volume, in $cm3\text{cm}^3$ , of 0.025 mol dm^-3 potassium manganate(VII) ( $KMnO4\text{KMnO}_4$ ) solution needed to completely oxidise 0.015 mol of ethanedioate ions ( $C2O42−\text{C}_2\text{O}_4^{2-}$ )?

2\text{MnO}_4^- + 5\text{C}_2\text{O}_4^{2-} + 16\text{H}^+ \rightarrow 2\text{Mn}^{2+} + 10\text{CO}_2 + 8\text{H}_2\text{O}

$120$

$240$

$600$

$1500$

Markscheme

Amount of substance Questions

A Level
Chemistry
Amount of substance

79 exam-style questions on AQA A Level Chemistry Amount of substance, covering Relative atomic mass and relative molecular mass, The mole and the Avogadro constant, The ideal gas equation, Empirical and molecular formula, and Balanced equations and associated calculations. Each one has a worked solution and a mark scheme showing where the marks go.

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