Question

1. Which of the following equations represents the proper net ionicequation for the precipitation of an insoluble carbonate compoundfrom Pb(NO3)2 (aq) and Na2CO3 (aq)?

Na2CO3 (aq) + Pb(NO3)2 (aq) ----> 2 NaNO3 (aq) + PbCO3 (s)
Pb2+ (aq) + CO32- (aq) ----> PbCO3 (s)
Na2CO3 (aq) + 2 NO3- (aq) ----> 2 NaNO3 (s) + CO32- (aq)
NO3- (aq) + Na+ (aq) ----> NaNO3 (s)
CO32- (aq) + Pb(NO3)2 (aq) ----> PbCO3 (s) + 2 NO3- (aq)
3 CO32-(aq) + 2 Pb3+(aq) ----> Pb2(CO3)3(s)
Na2+ (aq) + (NO3)2- (aq) ----> Na2(NO3)2 (s)
Na2CO3 (aq) + Pb(NO3)2(aq) ----> Na2(NO3)2 (aq) + PbCO3(s)
Pb+(aq) + CO3-(aq) ----> PbCO3 (s)


2. Which of the following equations represents the proper net ionicequation for the complete neutralization reaction between thestrong base, LiOH (aq) and the weak acid H2SO3 (aq) ?

H2SO3 (aq) + 2 OH-(aq) ---> 2 H2O (l) + SO32-(aq)
H2SO3 (aq) + 2 LiOH (aq)---->2 H2O (l) + Li2SO3 (aq)
SO32- (aq)+ 2 Li+(aq)----> Li2 SO 3 (aq)
H2+ (aq) + 2 OH- (aq) ----> 2 H2O (l)
H+ (aq) + OH- (aq) ----> H2O (l)
H+ (aq) + LiOH (aq) ----> H2O (l) + Li+ (aq)
H+ (aq) + Li+ (aq) ----> HLi (aq)
SO32- (aq) + OH- (aq) ----> HSO4 (aq)

3. What are the spectator ions in the solution after completelyprecipitating an insoluble sulfide compound when mixing Na2S (aq)and ZnBr2 (aq)?

Na+ , S2- , Zn2+ , and Br-
S2- and Zn2+
Br- and S2-
S2- and Na+
Na+ and Zn2+
Br- and Zn2+
Zn2+
Br-
Na+ and Br-
Na+

4. What are the spectator ions in the solution after the completeneutralization reaction occurs when mixing the weak acid HCN (aq)and the strong base NaOH (aq)?

H+ , CN-, Na+ , and OH-
OH- and Na+
H+ and OH-
Na+
OH- and CN-
Na+ and CN-
Na+ and H+
CN- and H+
CN-