FINAL EXAM REVIEW

  1. Calculate the mass percent ( ) of a solution containing 25 g of KCl in .
  2. Calculate the mass of solute needed to prepare each 350 mL of 1.8 M NaOH solution.
  3. What volume ( mL ) of a 4.0 M solution of HCl contains 12 g of solute?
  4. For each reaction shown below, determine the Brønsted-Lowry acid and base and their conjugates:
    a)
    b)
  5. Identify the Brønsted-Lowry acid for each base shown below:
    a)
    b)
  6. Identify the Brønsted-Lowry base for each acid shown below:
    a)
    b)
  7. Complete the missing information in the table below:
[OH] Acidic/Basic
  1. Identify each of the substances below as strong electrolyte, weak electrolyte or non-electrolyte:
    a)
    b)
    c)
    d) HF
  2. What are the [ ] and [ ] for a solution with a pH of 4.10.
  3. Match each of the solutions below with an expected pH value (assume the same concentration for all solutions):
    L
    A) HCl
    __ _
    B) HF
    _ _
    C) NaOH
    __
    D)
  4. A gas sample with a volume of 730 mL and pressure of 830 mmHg is at a temperature of . How many moles of gas does this sample contain?
  5. 7.6 moles of a gas in a container with a movable piston is heated from to . If the pressure remains constant, what is the new volume of the gas if it initially occupied 2.5 L ?
  6. How many grams of nitrogen gas has the same volume as 120 g of Ar gas at the same temperature and pressure?

ANSWERS:

  2. 25 g
  3. 82 mL
  4. For answers see instructor or tutors
  5. For answers see instructor or tutors
  6. For answers see instructor or tutors
Acidic/Basic
Acidic
Basic
Basic
  1. For answers see instructor or tutors

  4. 0.032 mol
  5. 3.0 L
  6. 84 g