Worksheet 5: H Chem Study Guide: Acids and Bases
1) List at least three characteristic properties of acids and three of bases.
2) Identify the acid, base, conjugate acid, and conjugate base in the following reactions:
a) HNO3 + H2O H3O+ + NO3-
b) H2C2O4 + CH3NH2 HC2O4- + CH3NH3+
c) NH4+ + H2O NH3 + H3O+
3) Complete and balance the following neutralization / acid-base reactions:
a) NaOH + H2CO3
b) H2SO4 + Ba(OH) 2
c) H2S + KOH
d) Al(OH) 3 + HBr
4) Write a balanced: (1) formula unit, (2) total ionic, and (3) net ionic equation for each of the following acid-base reactions:
a) KOH + H2SO4
b) HNO3 + Ba(OH)2
c) H2CO3 + Al(OH)3
d) Ca(OH)2 + HCl
5) Given a salt, predict an acid-base pair which would produce the salt:
a) Al2(SO4)3c) CaCl2
b) NH4Fd) KBr
6) Solve the following acid-base titration problems:
a)What is the molarity of sodium hydroxide, NaOH, if 59.0 mL of the solution is titrated to the endpoint with 24.0 mL of 0.75 M sulfuric acid (H2SO4)? (Hint: write the balanced equation first!)
b)A 55.6 mL sample of HCl is titrated with 79.9 mL of a 1.25 M solution of NaOH. What is the molarity of the HCl?
7) If you have a 1.0 M solution of NaOH and a solution of HCl with an unknown concentration, explain how you would use titration to determine the concentration of the HCl solution. (Explain the steps)
8) Perform the following molarity/normality problems:
a)What is the normality of a 5.0 M phosphoric acid (H3PO4) solution?
b)Find the normality of 5.6 g HBr in 450.0 mL of solution.
c)If 45.0 mL of 0.30 N H2SO4 are neutralized by 75.0 mL of NaOH, find the normality of the NaOH.
d)A 43.7 mL sample of Ba(OH) 2 is neutralized by 33.5 mL of 0.86 M HCl. What is the normality and molarity of the Ba(OH) 2 solution?
9) Calculate the pH and pOH of the following solutions:
a) [H+] = 1 x 10-6 Mc) [H+] = 7.4 x 10-8 Me) [H+] = 3.22 x 10-3 M
b) [OH-] = 1 x 10-9 Md) [OH-] = 9.9 x 10-11 Mf) [OH-] = 5.76 x 10-2 M
10) Calculate [H+] and [OH-] for the following solutions:
a) a solution with pH = 11c) a solution with pH = 2.45e) a solution with pOH = 1.3
b) a solution with pH = 8.5d) a solution with pOH = 7f) a solution with pOH = 12.6