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1 mole of ethyl alcohol was treated with one mole of acetic acid at 25°C. 2/3 of the acid changes into ester at equilibrium. The equilibrium constant of the reaction will be:

Correct answer: D. 4

  • A. 1
  • B. 2
  • C. 3
  • D. 4

Explanation

The reaction proceeds as follows:CH 3COOH +C2 H5OH ⇌ CH3COOC2H5 + H2OThe Kc calculation is shown in the image below:

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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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