Waec Model Questions Vol1 2019 Chemistry Question 23
Practice objective / multiple choice question 23 from the 2019 Waec Model Questions Vol1 Chemistry examination.
A pure primary alcohol CₙH₂ₙ₊₂O (molar mass 60.0 g mol⁻¹) is oxidised with excess acidic potassium dichromate according to the equation: 3 CₙH₂ₙ₊₂O + 2 K₂Cr₂O₇ + 8 H₂SO₄ → 3 CₙH₂ₙO + 2 Cr₂(SO₄)₃ + 2 K₂SO₄ + 8 H₂O. If 10.0 g of the alcohol is completely oxidised, calculate (a) the mass of the aldehyde produced and (b) the mass of chromium(III) sulfate formed. (Atomic masses: C = 12.0, H = 1.0, O = 16.0, Cr = 52.0, S = 32.0).
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About This Question
This is Waec Model Questions Vol1 2019 Chemistry Question 23. It is a objective / multiple choice question from the 2019 Waec Model Questions Vol1 Chemistry examination.
Difficulty level: Hard .
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