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Chemistry Question on Ionic Equilibrium

Find out the degree of dissociation of HF in 1 M aqueous solution. The value of K for the ionic equilibrium HF⇌H++F−  is  7.2×10−4.HF ⇌ H^++F^-\; is \;7.2 × 10^{-4.}

A

7.2×10−27.2 \times 10^{-2}

B

2.7×10−42.7 × 10^{-4}

C

2.7×10−22.7 × 10^{-2}

D

7.2×10−47.2 × 10^{-4}

Answer

2.7×10−22.7 × 10^{-2}

Explanation

Solution

The correct answer is (C) : 2.7×10−22.7 × 10^{-2}