Gce Model Questions Vol1 2024 Chemistry Question 9
Practice objective / multiple choice question 9 from the 2024 Gce Model Questions Vol1 Chemistry examination.
An unknown dicarboxylic acid (A) has molecular formula \(C_5H_8O_4\) and is a colour‑less solid that melts at \(70\ ^\circ\text{C}\). When treated with excess oxalyl chloride, it forms a cyclic anhydride (B) that shows a strong IR absorption at \(1800\ \text{cm}^{-1}\). (i) Identify acid A. (ii) If \(2.00\ \text{g}\) of A is reacted with excess oxalyl chloride, calculate the mass of anhydride B obtained (molar mass of B = \(144\ \text{g mol}^{-1}\)).
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This is Gce Model Questions Vol1 2024 Chemistry Question 9. It is one of the objective questions from the 2024 Gce Model Questions Vol1 Chemistry examination.
Difficulty level: Hard .
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