Q. pH value of which one of the following is not equal to one?
A) $0.1\ M\ HNO_{3}$
B) $0.05\ M\ H_{2}SO_{4}$
C) $0.1\ M\ CH_{3}COOH$
D) $50\ cm^{3}of\ 0.4\ M\ HCl + 50\ cm^{3}of\ 0.2\ M\ NaOH$
Explanation
(c)
Among the given, pH of 0.1M $CH_{3}COOH$ is not equal to one as $CH_{3}COOH$ is a weak acid, thus does not ionise completely.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.