Additional Questions

  1. A solution of 1.86 M sulfuric acid has a density of 1.115 g/mL. Calculate the molality of the solution.
  2. Calculate the percentage composition by weight of nitric acid in a 2.0 m HNO3 solution.
  3. How many milliliters of 47.0% hydrobromic acid (density 1.50 g/mL) are needed to prepare 1 L of a 0.156 M solution?
  4. A solution of 4.785 g of mercury(II) chloride in 60 g of water is found to boil at 100.152 °C. Is mercury(II) chloride dissociated in water solution?
  5. A solution consisting of 0.100 g of a certain compound and 10.00 g of cyclohexane freezes at 1.00 °C. Calculate the molecular weight of the compound. (Cyclohexane has a freezing point of 6.00 °C and a molal freezing point constant of 20.0.)
  6. Designate each of the following compounds as a strong electrolyte, weak electrolyte, or nonelectrolyte:
    1. KBr
    2. NH4Cl
    3. CH3NH2
    4. HCN
    5. CO2
    6. NaC2H3O2
    7. HCOOH
    8. HClO4
    9. C6H12
    10. CaO
    11. NaOH
    12. CH3COCH3
    13. CH3CH2OH
    14. SO2
    15. NH4C2H3O2
    16. CH3OCH3
    17. CH3CH2CO2CH3
    18. MgI2
    19. HF
    20. CH3CH2Cl
  7. A 0.10 m solution of a certain weak acid freezes at 0.245 °C. Calculate the percentage dissociation of the weak acid.