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Homework Help: Ideal Gas

  1. Feb 24, 2010 #1
    1. The problem statement, all variables and given/known data

    A monatomic ideal gas has pressure p_1 and temperature T_1. It is contained in a cylinder of volume V_1 with a movable piston, so that it can do work on the outside world.

    Consider the following three-step transformation of the gas:

    1. The gas is heated at constant volume until the pressure reaches A p_1 (where A >1).
    2. The gas is then expanded at constant temperature until the pressure returns to p_1.
    3. The gas is then cooled at constant pressure until the volume has returned to V_1.

    It may be helpful to sketch this process on the pV plane.

    PART A: How much work W_2 is done by the gas during step 2?
    Express the work done in terms of p_1, V_1, and A.

    PART B: How much work W_3 is done by the gas during step 3?
    If you've drawn a graph of the process, you won't need to calculate an integral to answer this question.
    Express the work done in terms of p_1, V_1, and A.

    Similar question found here:

    2. Relevant equations
    pv = nrt

    3. The attempt at a solution

    Part a= ????? (i dont know where to start)??
    Part b = ?????
  2. jcsd
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