A) Addition of one drop of concentrated HCl in \[N{{H}_{4}}OH\] solution decreases pH of the solution
B) A solution of the mixture of one equivalent of each of \[C{{H}_{3}}COOH\] and NaOH has a pH of 7
C) pH of pure neutral water is not zero
D) A cold and cone. \[{{H}_{2}}S{{O}_{4}}\] has lower \[{{H}^{+}}\] ion concentration than a dilute solution of \[{{H}_{2}}S{{O}_{4}}\]
Correct Answer: B
Solution :
\[C{{H}_{3}}COOH\] is weak acid while NaOH is strong base, so one equivalent of NaOH cannot be neutralized with one equivalent of \[C{{H}_{3}}COOH\]. Hence, one equivalent of each does not have pH value as 7. As the NaOH is a strong base. The solution will be basic having a pH more than 7.
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