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The concentration of hydrogen ion in a sample of soft drink is `3.8 xx 10^(-3)M`. What is its `pH`?

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Correct Answer - `2.42`
Given
`[H^(+)] = 3.8 xx 10^(-3) M`
`:.` pH value of soft drink
`= - "log"[H^(+)]`
`= -"log"(3xx 10^(-3))`
`= -"log"3.8 - "log"10^(-3)`
`= - "log" 3.8 + 3`
`= - 0.58 + 3`
`= -0.58 + 3`
`= 2.42`

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