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Question
The pH of 0.001 M HCl solution is ______.
Options
1.0
2.0
3.0
7.0
10
11
Solution
The pH of 0.001 M HCl solution is 3.0.
Explanation:
pH = −log10 \[\ce{[H3O+]}\]
= −log10 [0.001]
= −log10 [10−3]
= 3.0 ...[∵ log10 ax = x log10 a]
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