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6.2 Quantitative analysis

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Question 41

A standard laboratory solution of potassium manganate(VII) has a concentration of 23.70 g dm^-3.

Calculate the number of moles of potassium manganate(VII), $KMnO4\text{KMnO}_4$ , in 120.0 cm³ of this solution.

(Relative atomic masses: $O=16.0\text{O} = 16.0$ , $K=39.0\text{K} = 39.0$ , $Mn=55.0\text{Mn} = 55.0$ )

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Markscheme

6.2 Quantitative analysis Questions

GCSE
Chemistry
6.2 Quantitative analysis

119 exam-style questions on Edexcel GCSE Chemistry 6.2 Quantitative analysis, covering 6.2.1 Concentration in mol dm⁻³ and titration calculations, 6.2.2 Percentage yield and why actual yield falls short, 6.2.3 Atom economy of a reaction, 6.2.4 Choosing a reaction pathway, and 6.2.5 Molar volume of gases and Avogadro's law. Each one has a worked solution and a mark scheme showing where the marks go.

6.2 Quantitative analysis

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6.2 Quantitative analysis

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Question 41

A standard laboratory solution of potassium manganate(VII) has a concentration of 23.70 g dm^-3.

Calculate the number of moles of potassium manganate(VII), $KMnO4\text{KMnO}_4$ , in 120.0 cm³ of this solution.

(Relative atomic masses: $O=16.0\text{O} = 16.0$ , $K=39.0\text{K} = 39.0$ , $Mn=55.0\text{Mn} = 55.0$ )

[3]

Markscheme

6.2 Quantitative analysis Questions

GCSE
Chemistry
6.2 Quantitative analysis