1.

The concentration of hydrogen ions ina sample of soft drink is 3.8 times 10^-3m. What is the pH value? Whether the soft drink is acidic (or) basic?

Answer»

SOLUTION :`PH=-log_10[H_3O^+]`
`=-log_10[3.8 times 10^-3]`
`=-LOG 3.8 +3`
`=3-0.5798=2.4202`
`pH=2.42`
When `pH lt 7`, the soft drink is acidic.


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