Neco Model Questions Vol1 2022 Chemistry Question 28
Practice objective / multiple choice question 28 from the 2022 Neco Model Questions Vol1 Chemistry examination.
A 4.00 g mixture of ethanol (\(\mathrm{C_2H_5OH}\), \(M = 46.07\ \text{g mol}^{-1}\)) and 2‑propanol (\(\mathrm{C_3H_8O}\), \(M = 60.10\ \text{g mol}^{-1}\)) is oxidised with excess acidic \(\mathrm{KMnO_4}\). In this reaction a primary alcohol consumes 2 mol \(\mathrm{KMnO_4}\) per mole of alcohol, whereas a secondary alcohol consumes 1 mol \(\mathrm{KMnO_4}\) per mole. If the oxidation uses 0.080 mol of \(\mathrm{KMnO_4}\), calculate the mass percent of ethanol in the original mixture.
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This is Neco Model Questions Vol1 2022 Chemistry Question 28. It is one of the objective questions from the 2022 Neco Model Questions Vol1 Chemistry examination.
Difficulty level: Hard .
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