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  4. pH of 10 M HCl solution is

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Q. pH of 10 M $ HCl $ solution is

Rajasthan PETRajasthan PET 2006

Solution:

$ [{{H}^{+}}]=10\,M $
$ pH=-{{\log }_{10}}[{{H}^{+}}] $
$ =-{{\log }_{10}}[10] $
$ =-1 $
Hence, pH of $ 10\text{ }M\text{ }HCl $ solution is less than zero.