1.

The concentration of H^(+) ion in a sample of soft drink is 3.8xx10^(-3)M. Its pH is :

Answer»

`3.42`
`4.58`
`2.42`
`3.82`

SOLUTION :`pH=-log(3.8xx10^(-3))`
`=-[log3.8+log10^(-3)]`
`=-[(0.58)+(-3.0)]=2.42`


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