1.

pH of a human blood is 7.4. Then H^+ concentration will be……

Answer»

`4 times 10^-8`
`2 times 10^-8`
`4 times 10^-4`
`2 times 10^-4`

SOLUTION :`pH=-LOG[H^+]`
`7.4=-log[H^+]`
`7.4= log1-log[H^+]`
`log[H^+]=log 1-7.4`
`log[H^+]=8.6`
`THEREFORE [H^+]=ANTILOG of 8.6`
`=4 times 10^-8`


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