For each of the following parts, state whether there exists an ideal gas process

Question

For each of the following parts, state whether there exists an ideal gas process that satisfies the conditions given. If so, describe the process and give an example from tutorial if possible. If not, explain why such a process does not exist. There is heat transfer, but the temperature of the gas does not change (Q not equals to 0, DeltaT = 0). True, may be in all the heat is converted into work. Iso thermic There is no heat transfer, but the temperature of the gas changes (Q = 0, DeltaT not equals to 0). True, as work done may be all converted to internal energy change. Adiabatic There is no heat transfer, but work is done on the gas (Q = 0, W not equals to 0). True, all internal energy may be converted into work, volume decreases in adiabatic There is no work done on the gas, but there is heat transfer (W = 0, Q not equals to 0). True, as internal energy may be converted into heat, process. One mole of an ideal gas is confined to a container with a movable piston. The questions below refer to the processes shown on the PV diagram at right. Process I is a change from state X to state Y at constant pressure. Pressure II is a change from state W to state Z at a different constant pressure.

Explanation / Answer

a) Here Q is not zero, but temperature is not changing.

TRUE: Since the temperature is not changing, the change in internal energy will be zero hence the given heat will be used by the gas in moving the piston. So work done by the gas = heat given

b) Heat given=0, the temperature of gas is changing

TRUE: Because work done on the gas will be able to change the internal energy of the gas.

c) TRUE: As explained the situation in part b

d) TRUE: The work done is zero hence given heat will change the internal energy of the gas.

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