JEE Main Chemistry question

Chemistry Equilibrium JEE Main

HClO is a weak acid. The concentrations of [H⁺] ions in 0.1 M solution of HClO (Ka=5×10⁻⁸) will be equal to:

(A)7.07×10⁻⁵ MCorrect
(B)5×10⁻⁷ M
(C)6×10⁻⁷ M
(D)7×10⁻⁴ M

Answer: (A)

Solution

[H⁺]=√(5×10⁻⁸×0.1)=√(5×10⁻⁹)=7.07×10⁻⁵ M.

Question ID VK-136341