JEE Main Chemistry question

ChemistryEquilibriumJEE Main

One 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 for the reaction will be:

Answer: (D)

Solution

Kc=(2/3)²/(1/3)²=4.

Question ID VK-136144