Question

When aqueous solutions of Pb(NO3)2 and CuCl2 are mixed, does a precipitate form?


(b) Write a balanced equation for the precipitation reaction that occurs when aqueous solutions of sodium phosphate and chromium(III) chloride are combined.

Use the pull-down boxes to include states such as (s) or (aq).

Answer 1

Task #85610

When aqueous solutions of $\mathrm{Pb(NO3)2}$ and $\mathrm{CuCl2}$ are mixed, does a precipitate form?

(b) Write a balanced equation for the precipitation reaction that occurs when aqueous solutions of sodium phosphate and chromium(III) chloride are combined.

Use the pull-down boxes to include states such as (s) or (aq).

Solution:

$$(a) \mathrm{Pb}(\mathrm{NO}_3)_2(aq) + \mathrm{CuCl}_2(aq) = \mathrm{PbCl}_2(S) + \mathrm{Cu}^{2+}(aq) + \mathrm{NO}_3^- (aq);$$

So, when a solution of $\mathrm{Pb(NO_3)_2}$ and $\mathrm{CuCl}_2$ are mixed, a white precipitate of $\mathrm{PbCl}_2$ is formed.

$$(b) \mathrm{Na}_3\mathrm{PO}_4(aq) + \mathrm{CrCl}_3(aq) = \mathrm{CrPO}_4(S) + 3\mathrm{Na}^+(aq) + 3\mathrm{Cl}^-(aq);$$

When aqueous solution of $\mathrm{Na}_3\mathrm{PO}_4$ and $\mathrm{CrPO_4}$ are mixed, a brown black precipitate of $\mathrm{CrPO_4}$ is formed in the solution.

Answer provided by www.AssignmentExpert.com