1.

A current of 10.0A is passed through 1.0L of 1.0M HCl solution for 965 seconds, pH of the solution at the end of the experiment is:-

Answer»

0
0.2
0.8
none of the above

Solution :1L of 1.0 M HCl solution contains 1 mole of HCl.
`H^(+)+e^(-)to(1)/(2)H_(2)`
1 FARADAY PRODUCES 0.5 mole of `H_(2)`
`(965xx10)/(96500)` faraday produces`=(0.5xx965xx10)/(96500)`
`=0.05` mole of `H_(2)`
`0.05` mole of `H_2` contains 0.1 mole H.
`therefore0.9` mole `H^+` left in solution.
`pH=-log[0.9]=0.125`.


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