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1. Complete and balance the following reactions:
a C6H5NH2(aq) + H2O(l)
b C2H5NH2(aq) + HOCl(aq)
c Co2+(aq) + H2O(l)
d Cr(NO3)2(aq) + K2CO3(aq)
e Ba(C2H3O2)2(aq) + H2SO4(aq)
f Cu(NO3)2(aq) + NH3(aq)
2. Consider a 0.15 M solution of triethylamine, (C2H5)3N, at 25 oC.
a. Find the pH of the solution.
b. Enough triethylammonium chloride, (C2H5)3NHCl, is added to the solution to make the concentration of the triethylammonium ion 0.20 M. Find the pH of this buffer.
c. 5.0 g of perchloric acid is added to 1.0 L of the buffer prepared in part b. What is the new pH?
3. Consider silver iodide at 25 oC.
a. What is the molar solubility of silver iodide in pure water?
b. What is the molar solubility of silver iodide in 0.035 M sodium iodide solution?
c. What is the molar solubility of silver iodide in 1.0 M ammonia solution?
4. Indicate whether the following salts are acidic, basic, or neutral (circle the answer).
a. NaClO4 Acid Base Neutral
b. NaC2H3O2 Acid Base Neutral
c. Mn(HSO4)2 Acid Base Neutral
d. Mn(OH)2 Acid Base Neutral
e. NH4NO3 Acid Base Neutral