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Amount of substance

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Question 38

The reaction between manganate(VII) ions and ethanedioate ions in acidic solution can be represented by the equation:

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}

What volume, in $dm3\text{dm}^3$ , of 0.025 mol dm^-3 $KMnO4\text{KMnO}_4$ is needed to react completely with 0.075 mol of sodium ethanedioate ( $Na2C2O4\text{Na}_2\text{C}_2\text{O}_4$ )?

$0.48$

$1.2$

$3.0$

$7.5$

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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