Neco 2021 Chemistry Question 14

Practice objective / multiple choice question 14 from the 2021 Neco Chemistry examination.

Neco 2021 Chemistry Objective / Multiple Choice Hard Difficulty

Question 14 NECO • 2021 • CHEMISTRY • objective

A 0.10 M aqueous solution of ethyl acetate ( \(CH_3COOCH_2CH_3\) ) has a measured pH of 8.72 at 25 °C due to its hydrolysis:\n\(CH_3COOCH_2CH_3 + H_2O \rightleftharpoons CH_3COOH + CH_3CH_2OH\)\nGiven that the acid dissociation constant of acetic acid is \(K_a = 1.8\times10^{-5}\), calculate the equilibrium constant \(K\) for the ester hydrolysis reaction.

A. 2\\times10^{-25}

Correct Answer B. 4\times10^{-25}

C. 1\\times10^{-25}

D. 4\\times10^{-24}

Correct Answer

Correct Option:

4\times10^{-25}

This is Neco 2021 Chemistry Question 14. It is one of the objective questions from the 2021 Neco Chemistry examination.

Difficulty level: Hard .

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