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Van't Hoff Factor

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Question

The concentration of hydrogen ion in a sample of soft drink is $3.8 \times 10^{- 3} M$ . What is its $p H$ value?

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Solution

The $p H$ of a solution is the negative logarithm of hydrogen ion concentration.

$p H = - l o g [H_{3} O^{+}]$

$p H = - l o g (3.8 \times 10^{- 3})$

$p H = 2.42$

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