MEDIUMMCQ SINGLEJEE Mains ChemistryPhysical ChemistryIonic equilibriumDissociation of Weak Acids and Bases

0.2 molar solution of formic acid is ionized 3.2%. Its ionization constant is

A.9.6 × 10

B.2.1 × 10✓ Correct

C.1.25 × 10

D.4.8 × 10

Explanation

C = 0.2 M 3.2 α 0.032 100 K α C a 2 K = α C a 2 3 K = 32 10 0.2 a x x 4 K = 2.1 10 a x

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