The rate constants for the forward and backward reactions of the hydrolysis of the ester are 5.5 x 10^-3 mol dm-3 s-1 and 1.1 x 10^-3 mol dm-3 s-1, respectively. The equilibrium constant of the reaction, CH3COOC2H5+ H+ ⇌ CH3COOH+ C2H5OH, is
Correct answer: A. 5
- A. 5
- B. 6
- C. 7
- D. 8
Explanation
Equilibrium constant is just the ratio of forward to backward rate constants. Units cancel out, leaving a dimensionless number. A higher kf compared to kb means the equilibrium favors products.
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About Chemical Equilibrium
Reversible reactions reach dynamic equilibrium when forward and reverse rates become equal, and Le Chatelier's principle predicts the effect of changing concentration, pressure or temperature. The chapter also covers solubility product, the common ion effect, buffer action and the conditions used in Haber's process, with equilibrium shifts distinguished from changes in the equilibrium constant.
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