Gce Model Questions Vol1 2018 Chemistry Question 21
Practice objective / multiple choice question 21 from the 2018 Gce Model Questions Vol1 Chemistry examination.
A 5.00 g sample of cyclohexanol (\(\mathrm{C_6H_{12}O}\), M = 100.16 g mol\(^{-1}\)) is oxidised with potassium dichromate in acidic medium according to the equation \(3\,\mathrm{C_6H_{12}O} + \mathrm{K_2Cr_2O_7} + 4\,\mathrm{H_2SO_4} \rightarrow 3\,\mathrm{C_6H_{11}COOH} + \mathrm{Cr_2(SO_4)_3} + \mathrm{K_2SO_4} + 7\,\mathrm{H_2O}\). If 0.025 mol of \(\mathrm{K_2Cr_2O_7}\) is used and 4.20 g of cyclohexanecarboxylic acid (\(\mathrm{C_7H_{12}O_2}\), M = 128.17 g mol\(^{-1}\)) is isolated, calculate the percentage yield of the oxidation.
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This is Gce Model Questions Vol1 2018 Chemistry Question 21. It is one of the objective questions from the 2018 Gce Model Questions Vol1 Chemistry examination.
Difficulty level: Hard .
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