Igcse Model Questions Vol1 2022 Chemistry Question 31
Practice objective / multiple choice question 31 from the 2022 Igcse Model Questions Vol1 Chemistry examination.
A 0.500 g mixture of acetic acid (\(\mathrm{CH_3COOH}\), molar mass \(60.05\ \mathrm{g\ mol^{-1}}\)) and propionic acid (\(\mathrm{CH_3CH_2COOH}\), molar mass \(74.08\ \mathrm{g\ mol^{-1}}\)) is treated with \(50.0\ \mathrm{mL}\) of \(0.200\ \mathrm{M}\) NaOH. The excess NaOH is back‑titrated with \(0.100\ \mathrm{M}\) HCl, requiring \(30.0\ \mathrm{mL}\) to reach the endpoint. Assuming each acid reacts with NaOH in a 1:1 mole ratio, calculate the mass of acetic acid and the mass of propionic acid present in the original mixture.
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About This Question
This is Igcse Model Questions Vol1 2022 Chemistry Question 31. It is one of the objective questions from the 2022 Igcse Model Questions Vol1 Chemistry examination.
Difficulty level: Hard .
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