A) less than 7
B) more than 7 but less than 8
C) 8
D) 7
Correct Answer: A
Solution :
In more dilute\[HCl\]solution\[({{10}^{-8}}N\text{ }HCl\]solution), H+ ion is released by\[HCl\]and\[{{H}_{2}}O\]. \[\therefore \]Total\[{{H}^{+}}\]ion in solution\[={{10}^{-7}}+{{10}^{-8}}\] \[=11\times {{10}^{-8}}\] \[pH=-\log [{{H}^{+}}]\] \[=-\log (11\times {{10}^{-8}})\] \[=8\text{ }log\text{ }10-log\text{ }11\] \[=8-1.0414\] \[=6.9586\]
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