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Molarity

Calculate the...

Question

Calculate the pH of the solution obtained by mixing $10 m L$ of $0.1 M$ $H C l$ and $40 m L$ of $0.2 M$ $H_{2} {S O}_{4}$ .

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Solution

$[H^{+}] = \frac{N_{1} \times V_{1} + N_{2} \times V_{2}}{V}$
$[H^{+}] = \frac{10 \times 0.1 + 40 \times 0.4}{50} = 0.34$
$p H = - l o g ([H^{+}]) = 0.4685$

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