Gce Model Questions Vol1 2024 Chemistry Question 26
Practice objective / multiple choice question 26 from the 2024 Gce Model Questions Vol1 Chemistry examination.
Two weak acids, formic acid ( \(K_a = 1.8 \times 10^{-4}\) ) and acetic acid ( \(K_a = 1.8 \times 10^{-5}\) ), are mixed in water so that the total concentration of the acids (sum of their analytical concentrations) is \(0.20\ \text{mol dm}^{-3}\). The resulting solution has a measured pH of 2.5. Assuming activity coefficients are unity, calculate the molar ratio of formic acid to acetic acid present in the mixture.
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This is Gce Model Questions Vol1 2024 Chemistry Question 26. It is one of the objective questions from the 2024 Gce Model Questions Vol1 Chemistry examination.
Difficulty level: Hard .
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