1.

The concentration of hydrogen ion in a sample of soft drink is 3.8xx10^(-3)M. What is its pH ?

Answer»

Solution :Here, we are given that
`[H^(+)]=3.8xx10^(-3)M`
`PH=-log [H^(+)]=-log (3.8xx10^(-3))=-(log 3.8 + log 10^(-3))=-0.58 + 3 = 2.42 = 2.42`
As pH is LESS than 7, the SOFT drink is acidic.


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