Which of the following would increase the solubility of \( \mathrm{Pb}(\mathrm{OH})_{2} \) ? (a)...

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Which of the following would increase the solubility of \( \mathrm{Pb}(\mathrm{OH})_{2} \) ?
(a) Add hydrochloric acid
(b) Add a solution of \( \mathrm{Pb}\left(\mathrm{NO}_{3}\right)_{2} \)
(c) Add a solution of \( \mathrm{NaOH} \)
(d) None of the above-the solubility of a compound is constant at constant temperature
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