MEDIUMMCQ SINGLEJEE Mains ChemistryPhysical ChemistryIonic equilibriumTheory of Acids and Bases

A weak acid, HA has a Ka of 1.00 10 x . If 0.100 mole of this acid is dissolved in 1 L of water, the percentage of acid dissociated at equilibrium is closest to

A.99.0%
B.1.00%
C.99.9%
D.0.100%✓ Correct
Explanation

HA H A 2 a H A H K HA HA a H K HA 5 6 3 1 10 0.1 1 10 1 10 x x x x actualionisation molar concentration 3 2 10 10 0.1 % of acid dissociated = 2 10 100 1% x

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