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Question
The pH of a sample of vinegar is 3.76. Calculate the concentration of hydrogen ion in it.
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Solution
Given
pH = 3.76
it is known that
pH = -log[`"H"^(+)`]
`=> log["H"^+] = -"pH"`
`=> ["H"^(+)] = "antilog" (-"pH")`
`= "antilog" (-3.76)`
`= 1.74 xx 10^(-4) "M"`
Hence, the concentration of hydrogen ion in the given sample of vinegar is 1.74 × 10–4M.
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