Published by:
CGP EDU Academic Team
Published on: August 12, 2026
Which would decrease the 
of 
of a 
solution of hydrochloric acid
A
The addition of 
hydrochloric acid
hydrochloric acid
B
The addition of 
of 
hydrochloric acid
of hydrochloric acid
C
The addition of magnesium metal
D
None of these
Text Solution
Verified by ExpertsThe correct answer is:
D
pH decreases when the 
concentration increases.
Adding 0.005 M HCl (more dilute) lowers the overall 
increases.
Adding 0.02 M HCl (more concentrated) raises the overall 
decreases.
Magnesium reacts with HCl and consumes 
:
so pH increases.
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