JEE Main 2025 Chemistry question
If 1 mM solution of ethylamine produces pH = 9, then the ionization constant (Kb) of ethylamine is . The value of x is (nearest integer). [The degree of ionization of ethylamine can be neglected with respect to unity.]
Answer: 7
Solution
pH=9 gives pOH=5, [OH⁻]=10⁻⁵M. .