Which of the following statement(s) is/are correct? (A) The pH of 1 × 10⁻⁸ M HCl solution is 8. (B) The conjug…

Question

Which of the following statement(s) is/are correct?

(A) The pH of $$1 	imes 10^{-8}\,\mathrm{M}$$ HCl solution is $$8$$.

(B) The conjugate base of $$\mathrm{H_2PO_4^-}$$ is $$\mathrm{HPO_4^{2-}}$$.

(C) $$K_w$$ increases with increase in temperature.

(D) When a solution of a weak monoprotic acid is titrated against a strong base, at half neutralisation point, $$\mathrm{pH}=\dfrac{1}{2}\,pK_a$$.

Choose the correct answer from the options given below:

Accepted Answer

C. (B), (C)

Answer

A. (A), (B), (C)

Answer

B. (B), (C), (D)

Answer

D. (A), (D)

Answer & step-by-step solution