Question

Compare the solubility of lead carbonate in each of the following aqueous solutions: 0.10 M Pb(NO3)2...

Compare the solubility of lead carbonate in each of the following aqueous solutions: 0.10 M Pb(NO3)2 0.10 M K2CO3 0.10 M NaCH3COO 0.10 M NH4NO3 More soluble than in pure water. Similar solubility as in pure water. Less soluble than in pure water.

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Answer #1

First of solubility is affected by temperature explained by Le Chatlier's principle, Pressure explained by Henry's law and Common ion effect.

In Pb(NO3)2: Les soluble than in water due to the presence of Common ion Pb+2

In K2CO3: Less soluble than in water due to presence of CO32- ion

In CH3COONa: similar solubility as in water.

In NH4NO3: more soluble than in water since NH4+ is acidic in nature and CO32- is basic in nature and both combine together to form stable H2CO3.

NH4+ +CO32- ----> H2CO3 + NH3

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