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Chemistry LibreTexts

11.E: Exercises

  • Page ID
    28722
  • 11.5: Applications of the Ideal Gas Law: Molar Volume, Density and Molar Mass of a Gas

    1. If 100 mL of \(\ce{HCl}\) gas at 300 K and 100 kPa dissolves in 20 mL of pure water, what is the concentration?

      Hint: 0.4 mol/L

      Skill:
      Calculate n using ideal gas law.

    2. If 100 mL of \(\ce{HCl}\) gas at 300 K and 100 kPa dissolved in pure water requires 12.50 mL of the \(\ce{NaOH}\) solution to neutralize in a titration experiment, what is the concentration of the \(\ce{NaOH}\) solution?
      Hint: 0.32 mol/L

      Skill:
      Apply ideal gas law to solve stoichiometry problems.

    3. If 100 mL of \(\ce{HCl}\) gas at 300 K and 200 kPa dissolved in pure water requires 12.50 mL of the \(\ce{NaOH}\) solution to neutralize in a titration experiment, what is the concentration of the \(\ce{NaOH}\) solution?

      Hint: 0.64 mol/L

      Skill:
      Solve stoichiometric problem.

    4. Hydrogen sulfide reacts with sulfur dioxide to give \(\ce{H2O}\) and \(\ce{S}\),

      \(\ce{H2S + SO2 \rightarrow H2O + S_{(solid)}}\), unbalanced

      If 3.0 L of \(\ce{H2S}\) gas at 760 torr produced 4.8 g of sulfur, calculate the temperature in C.

      Hint: 93 degrees C

      Skill:
      Apply ideal gas law to solve stoichiometry problems.

    5. When 10.0 mL of \(\ce{AgNO3}\) solution is treated with excess amount of \(\ce{HI}\) gas to give 0.235 g of \(\ce{AgI}\), what is the concentration of the \(\ce{AgNO3}\) solution?

      Hint: 0.10 M

    6. When an \(\ce{AgNO3}\) solution is treated with 50.0 mL of \(\ce{HI}\) gas to give 0.235 g of \(\ce{AgI}\), what is the concentration of the \(\ce{HI}\) gas?

      Hint: 0.020 mol/L

    7. When an \(\ce{AgNO3}\) solution is treated with 50.0 mL of \(\ce{HI}\) gas at 300 K to give 0.235 g of \(\ce{AgI}\), what is the pressure of the \(\ce{HI}\) gas?

      Hint: 0.49 atm

      Discussion:
      Depending on the numerical values you use, you may get the pressure in other units.

    8. When an \(\ce{AgNO3}\) solution is treated with 50.0 mL of \(\ce{HI}\) gas at 374 torr to give 0.235 g of \(\ce{AgI}\), what is the temperature of the \(\ce{HI}\) gas?

      Hint: 300 K

      Discussion:
      Note the relationship of this problem with the previous one.