Single Answer MCQ
Q-00039941
If the pH of a solution decreases from 7 to 5, what happens to the concentration of hydrogen ions?
1
It decreases
2
It increases
3
It remains constant
4
It becomes neutral
Answer and Solution
Answer
B. It increases
Solution:
As the pH decreases from 7 to 5, the concentration of H+ ions increases significantly; each pH unit change corresponds to a tenfold change in ion concentration.
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