Equilibrium Question 440
Question: In a solution of $ pH=5, $ more acid is added in order to reduce the $ pH=2. $ The increase in hydrogen ion concentration is [MP PET 1989; CPMT 1990]
Options:
A) 100 times
B) 1000 times
C) 3 times
D) 5 times
Show Answer
Answer:
Correct Answer: B
Solution:
$ {{[{H^{+}}]}_{I}}={10^{-5}} $
$ {{[{H^{+}}]}_{II}}={10^{-2}} $ Thus increase in $ [{H^{+}}]=\frac{{10^{-2}}}{{10^{-5}}}=1000 $ times
