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CBSE Class 11-science Answered

A solution is formed by combining 0.025 mol CaCl2 and 0.015 mol Pb(NO3)2 producing one litre of solution. Will PbCl2 precipitate in this solution?
Asked by Topperlearning User | 04 Jun, 2014, 13:23: PM
answered-by-expert Expert Answer
0.015 mol of Pb(NO3)2 gives 0.015 mol of Pb2+ ions or ,0.015 M)
0.025 mol of CaCl2 yields 0.05 mol Cl- ions or. 0.05 M
 
Hence , [Pb2+][Cl]2 = (0.015)(0.050)2 = 3.75 x 10-5
 
Ksp of PbCl2 = 1.6 x 10-5
 

Since the ion product is larger than the Ksp, the solution precipitates.

Answered by | 04 Jun, 2014, 15:23: PM
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