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 one of the objective questions from the 2019 Waec Model Questions Vol1 Chemistry examination.
Difficulty level: Hard .
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