Calculate \( \mathrm{pH} \) of \( 0.001 M \) solution of \( \mathrm{ZnCl}_{2} \cdot K_{a} \) for...

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Calculate \( \mathrm{pH} \) of \( 0.001 M \) solution of \( \mathrm{ZnCl}_{2} \cdot K_{a} \) for, \( \mathrm{Zn}^{2+}+\mathrm{H}_{2} \mathrm{O} \rightleftharpoons \mathrm{Zn}(\mathrm{OH})^{+}+\mathrm{H}^{+} \)is \( 1.0 \times 10^{-9} \).
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