Which of the following would increase the sol | vedclass

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(A) The dissolution equilibrium of $Pb(OH)_2$ is given by: $Pb(OH)_2(s) \rightleftharpoons Pb^{2+}(aq) + 2OH^-(aq)$.Adding $HCl$ introduces $H^+$ ions

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Add hydrochloric acid

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(A) The dissolution equilibrium of $Pb(OH)_2$ is given by: $Pb(OH)_2(s) \rightleftharpoons Pb^{2+}(aq) + 2OH^-(aq)$.Adding $HCl$ introduces $H^+$ ions,which react with $OH^-$ ions to form water: $H^+(aq) + OH^-(aq) \longrightarrow H_2O(l)$.This removal of $OH^-$ ions from the solution shifts the equilibrium to the right according to Le Chatelier's Principle to replace the consumed $OH^-$ ions.Consequently,more $Pb(OH)_2$ dissolves,increasing its solubility.Adding $Pb(NO_3)_2$ or $NaOH$ would introduce common ions ($Pb^{2+}$ or $OH^-$ respectively),which would decrease the solubility due to the common ion effect.

Which of the following would increase the solubility of $Pb(OH)_2$?

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