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O-LevelChemistryStoichiometry5070/12 · May/June 2018 · Q121 Mark

A mass of 63g of potassium manganate(VII), KMnO₄, is needed for the complete oxidation of 23 g of ethanol, C₂H₅OH, under acidic conditions. How many moles of ethanol can be completely oxidised by one mole of potassium manganate(VII) under these conditions?

A0.37
B0.80
C1.00
D1.25

✓ Correct answer

D: 1.25

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About this question

Topic
Stoichiometry, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source
O-Level Chemistry, May/June 2018 Paper 1 Variant 2, question 12.

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