Igcse Model Questions Vol1 2023 Chemistry Question 34
Practice objective / multiple choice question 34 from the 2023 Igcse Model Questions Vol1 Chemistry examination.
In a two‑step synthesis, 10.0 g of ethanol (C_{2}H_{5}OH, M=46.07 g mol^{-1}) is first oxidised with PCC to give acetaldehyde (C_{2}H_{4}O). The oxidation proceeds with an 80 % yield. In the second step, two molecules of acetaldehyde undergo an aldol condensation followed by dehydration to produce crotonaldehyde (C_{4}H_{6}O), with an overall yield of 70 % for this step. Calculate the mass of crotonaldehyde obtained (in grams, to three significant figures).
Answer Options
About This Question
This is Igcse Model Questions Vol1 2023 Chemistry Question 34. It is one of the objective questions from the 2023 Igcse Model Questions Vol1 Chemistry examination.
Difficulty level: Medium .
Master the Exam!
You've seen a preview, but there are thousands more questions plus AI tutor to break down complex solutions.