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pH the Power of H

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Question

Calculate the pH of a 0.01 M of HCl solution.

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Solution

We know that $H C l$ dissociates into to ions
(for $I L$ solution) $\begin{matrix} H a & ⟶ & H^{+} & + C l^{-} 0.01 & 0.01 & 0.01 m e l e n & m e l e n & m e l e n \end{matrix}$
$p H = - log [H^{+}]$
$= - log [0.01]$
$= 2$

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