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Strength of Acids and Bases

The hydrogen ...

Question

The hydrogen ion concentration of a solution is 0.005M. What is the pH of this solution?

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Solution

pH = $- l o g_{10} [H^{+}]$

pH = $- l o g_{10} (0.005)$

pH = $- l o g_{10} (5 \times 10^{- 3})$

= $- l o g_{10} 5 - (- 3) (l o g_{10} 10)$

= -0.6990 + 3

pH = 2.3010

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