1. Complete and balance the following in aqueous solution.
a. cyanate ion plus perchloric acid
b. NH3(aq) + HClO(aq)
c. Cu(NO3)2(aq) + Li2S(aq)
d. CdC2O4(s) + HNO3(aq)
e. Ni2+(aq) + H2O(l)
f. Cu2+(aq) + NH3(aq)
2. Which is the stronger acid, SiH4 or PH3? Provide a brief explanation.
3. Is a solution of Na3PO4 acidic, basic, or neutral? Show reactions that support your conclusion.
4. A solution is prepared with [NH3] = 0.010 M and [NH4+] = 0.050 M. Find the pH.
5. Consider ZnCO3:
a. Find the molar solubility of ZnCO3 in water at 25 °C. Ksp = 1.4×10–11
b. Find the molar solubility of ZnCO3 in a 0.10 M solution of NH3 at 25 °C. Assume that the ammonia concentration does not change significantly. Is the assumption valid? Why or why not?