JEE Main 2012Annual, Paper 1ChemistryEasyEquilibrium123× since 2002The pH of a 0.1 molar solution of the acid HQ is 3. The value of the ionization constant, K_a of this acid is :AOption A. 3 ×\times× 10^–1BOption B. 1 ×\times× 10^–3COption C. 1 ×\times× 10^–5DOption D. 1 ×\times× 10^–7CheckSkip · show solution