Briefly explain the hazards associated with 0.10 mol L^-1 BaCI_2, solution, 0.10

Question

Briefly explain the hazards associated with 0.10 mol L^-1 BaCI_2, solution, 0.10 mol L^-1 Pb(NO_3)_2 solution, and 0.10 mol L^-1 Na_2 C_2 O_4 solution. Compete and balance the molecular equations and write total and net ionic equations for the reactions that would occur if the following pairs of solutions were mixed. Be sure to indicate whether reaction products are solid or dissolved in water. BaCl_2(aq) + KIO_3(aq) rightarrow Sr(NO_3)_2(aq) + Na_2SO_4(aq) rightarrow Pb(NO_3)_2(aq) + NaOH(aq) rightarrow CuSO_4(aq) + Na_2 C_2 O_4(aq) rightarrow

Explanation / Answer

2)

a) Complete molecular equation: BaCl2 (aq) +2 KIO3 (aq) Ba(IO3)2 (aq) + 2 KCl (aq)

    Total net ionic equaiton:

    Ba2+(aq) + 2Cl-(aq) + 2K+(aq)+ 2IO3-(aq) Ba2+(aq) + 2IO3-(aq) + 2K+(aq) + 2Cl-(aq)

b) Complete molecular equation: Sr(NO3)2(aq) + Na2SO4(aq) SrSO4(s) + 2NaNO3(aq)

    Total net ionic equaiton:

     Sr2+ (aq) + 2NO3- (aq) + 2Na+ (aq) + SO42- (aq) SrSO4 (s) + 2Na+ (aq) + 2NO3- (aq)

    Net ionic equation: Sr2+ (aq) + SO42- (aq) SrSO4 (s)

c) Complete molecular equation: Pb(NO3)2(aq) + 2 NaOH(aq) 2 NaNO3(aq) + Pb(OH)2(s)

    Total net ionic equaiton:

    Pb2+(aq) + 2NO3-(aq) + 2Na+(aq) + 2OH-(aq) Pb(OH)2(s) + 2Na+(aq) + 2NO3-(aq)    

     Net ionic equation: Pb2+(aq) + 2OH-(aq) Pb(OH)2(s)   

d) Complete molecular equation: Na2C2O4(aq) + CuSO4(aq) Na2SO4(aq) + CuC2O4(s)

    Total net ionic equaiton: 2Na+(aq) + C2O42- (aq) + Cu2+(aq) + SO42-(aq)    CuC2O4(s)

   Net ionic equation: Cu2+(aq) + C2O42- (aq) CuC2O4(s)

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