Neco 2025 Chemistry Question 39
Practice objective / multiple choice question 39 from the 2025 Neco Chemistry examination.
A 1.00 g sample containing a mixture of benzoic acid (\(\text{C}_6\text{H}_5\text{COOH}\), monobasic, \(M=122\ \text{g mol}^{-1}\)) and oxalic acid (\(\text{HOOC-COOH}\), dibasic, \(M=90\ \text{g mol}^{-1}\)) is dissolved in water and titrated with \(0.100\ \text{M}\) NaOH. The first equivalence point occurs after \(16.0\ \text{mL}\) of NaOH and the second after \(30.0\ \text{mL}\). Assuming the only acids present are the two mentioned, determine the mass percent of oxalic acid in the original sample.
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About This Question
This is Neco 2025 Chemistry Question 39. It is one of the objective questions from the 2025 Neco Chemistry examination.
Difficulty level: Hard .
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