The reaction of \( \mathrm{Pb}\left(\mathrm{NO}_{3}\right)_{2} \) and \( \mathrm{NaCl} \) in wat...

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The reaction of \( \mathrm{Pb}\left(\mathrm{NO}_{3}\right)_{2} \) and \( \mathrm{NaCl} \) in water produces a precipitate that dissolves upon the addition of \( \mathrm{HCl} \) of appropriate concentration. The dissolution of the precipitate is due to the formation of:
(a) \( \mathrm{PbCl}_{2} \)
(b) \( \mathrm{PbCl}_{4} \)
(c) \( \left[\mathrm{PbCl}_{4}\right]^{2-} \)
(d) \( \left[\mathrm{PbCl}_{6}\right]^{2-} \)
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