Igcse Model Questions Vol1 2020 Chemistry Question 35
Practice objective / multiple choice question 35 from the 2020 Igcse Model Questions Vol1 Chemistry examination.
A 10.0 g sample of cyclohexanol (M = 100.16 g mol⁻¹) is oxidised to cyclohexanone (M = 100.16 g mol⁻¹) with an isolated yield of 85 %. The cyclohexanone is then reacted with phenylhydrazine (M = 108.14 g mol⁻¹) in a 1:1 molar ratio to give the corresponding phenylhydrazone, isolated in 90 % yield based on cyclohexanone. Finally, the phenylhydrazone undergoes Wolff-Kishner reduction to cyclohexane (M = 84.16 g mol⁻¹) with an 80 % yield based on phenylhydrazone. Calculate the mass of cyclohexane obtained at the end of the three‑step sequence.
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About This Question
This is Igcse Model Questions Vol1 2020 Chemistry Question 35. It is one of the objective questions from the 2020 Igcse Model Questions Vol1 Chemistry examination.
Difficulty level: Medium .
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