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A-LevelChemistryAtoms, molecules and stoichiometry9701/12 · Oct/Nov 2014 · Q151 Mark

Use of the Data Booklet is relevant to this question. A sample of potassium oxide, K₂O, is dissolved in 250cm³ of distilled water. 25.0cm³ of this solution is titrated against sulfuric acid of concentration 2.00moldm⁻³. 15.0 cm³ of this sulfuric acid is needed for complete neutralisation. Which mass of potassium oxide was originally dissolved in 250 cm³ of distilled water?

A2.83 g
B28.3 g
C47.1 g
D56.6 g

✓ Correct answer

B: 28.3 g

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About this question

Topic
Atoms, molecules and stoichiometry, A-Level Chemistry (syllabus 9701). Multiple choice, 1 mark.
Source
A-Level Chemistry, Oct/Nov 2014 Paper 1 Variant 2, question 15.

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