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  4. What is the pH value of 0.03 N HCl solution?

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Q. What is the $pH$ value of $0.03 \,N\,HCl$ solution?

Uttarkhand PMTUttarkhand PMT 2010

Solution:

$pH =-\log \left[ H ^{+}\right]$
$0.03 \,N \,HCl \rightarrow\left[ H ^{+}\right]=3 \times 10^{2-}$
$pH =-\log \left[3 \times 10^{2-}\right]$
$=2 \log 3$
$=1.52$