Write the ions that result when the following compounds are dissolved in aqueous

Question

Write the ions that result when the following compounds are dissolved in aqueous solution: a. CacCl_2(aq) rightarrow ________ b. Na_2S(aq) rightarrow _________ c. ((NH_4)_2CO_3(aq) rightarrow _________ d. K_2SO_4(aq) rightarrow _________ Using the solubility rules in Table 7-1, predict the solubility of each of the following compounds in water: (aq = soluble solution), s = insoluble solid) a) CaCO_3 _______ b) Al(OH)_3 ______ c) Hg_2Cl_2 _____ d) Cu(NO_3)_2 __________ Write the complete ionic and net ionic equations for the following reaction: Pb(NO_3)_2 (aq) + 2 NaI(aq) rightarrow PbI_2(s) + 2NaNO_3(aq)

Explanation / Answer

3)

a) CaCl2 (aq) ----> Ca2+ + 2Cl-

b) Na2S (aq) -----> 2Na+ + S2-

c) (NH4)2CO3 (aq) ----> 2NH4+ + CO32-

d) K2SO4 (aq) -----> 2K+ + SO42-

4) a)CaCO3 = soluble

b) Al(OH)3 = Insoluble

c) Hg2Cl2 = Insoluble

d) Cu(NO3)2 = soluble

5)

Complete ionic equation

Pb2+ (aq) + 2NO3- (aq) + 2 Na+ (aq) + 2 I- (aq) ---> PbI2 (s) + 2Na+ (aq) + 2NO3- (aq)

Net ionic equation

Pb2+ (aq) + 2 I- (aq) ---> PbI2 (s)

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