• Question 01:

    A homogeneous, liquid solution such as aqueous sodium chloride, can be characterized by which of the following properties?

  • Questions 02-03:

    Four balloons are filled to an identical volume (0.500 L), held at an identical pressure (1.00 atm), and maintained at an identical temperature (298 K), with the only difference being the gas used in each case.

    Question 02:

    Which balloon has the greatest number of moles of gas?

  • Question 03:

    An identical, microscopic pinhole is made in each of the balloons. After 24 hours, which of the balloons will have the largest physical size?

  • Question 04:

    When a gas such as CO2, at a temperature of 430 K, is found to exhibit a measured pressure that is less than the pressure predicted by the ideal gas law, which of the following provides the best explanation for the observation?

  • Question 05:

    Under which set of conditions, would oxygen gas be expected to behave least like an ideal gas?

  • Question 06:

    2.0 L of a gas initially at a pressure of 1.0 atm, is allowed to expand to a new volume of 4.0 L while maintaining a constant temperature. What can be said of the new pressure, and the change in kinetic energy of the gas particles?

  • Question 07:

    In the situation described by the equation below, several different, nanoscopic processes can be thought of as occurring, two of which are also identified below.

    AgNO3(s) → AgNO3(aq)

    • Silver ions are separated from nitrate ions in solid AgNO3
    • Water molecules are separated from one another in liquid H2O

    Which of the following accurately describes another process that occurs when the solid silver nitrate is converted to an aqueous solution of silver nitrate?

  • Questions 08-09:

    For Questions 8-9 consider the process of dissolving solid calcium chloride in water.

    Question 08:

    The dissolution of calcium chloride is found to have an enthalpy change, ΔH° = -120 kJ molrxn-1. Which is the best explanation for the sign associated with this change?

  • Question 09:

    Which equation best summarizes the process of dissolving solid calcium chloride in water?

  • Question 10:

    When accurately diluting a solution, which of the following is considered to be part of an acceptable procedure?

  • Question 11:

    Which statement is true, of four identical (in terms of P, T, and V) balloons, one containing He, one containing H2, one containing SF6, and one containing Cl2?

  • Question 12:

    What specific feature of a water molecule allows it to be attracted to both sodium, and chloride ions, when common tale salt is dissolved?