4 Basic Thermodynamic Processes Online Quiz Questions

An adiabatic process necessarily takes place at constant temperature.

A fixed amount of ideal gas is heated at constant pressure. If its absolute temperature doubles, what happens to its volume?

Select all statements that are correct about adiabatic processes.

An ideal gas expands at constant pressure of $200\,\text{kPa}$, from $0.020\,\text{m}^3$ to $0.050\,\text{m}^3$. What work is done by the gas? Enter your answer in kJ.

What is the name of a thermodynamic process in which a fixed amount of gas remains at constant volume?

Compare a reversible isothermal expansion of an ideal gas with a reversible adiabatic expansion. For each process, state whether heat is transferred, whether the gas's internal energy changes, and how its temperature changes.

For an ideal gas, if the initial and final temperatures are equal, the internal-energy change is zero even if the process between those states is not isothermal.

An ideal gas is at $p=100000\,\mathrm{Pa}$, $V=0.02493\,\mathrm{m^3}$, and $T=300\,\mathrm{K}$. Using $R=8.31\,\mathrm{J/(mol\,K)}$, what is the amount of gas in moles?

A fixed amount of ideal gas undergoes a reversible isothermal expansion. Which set of signs and relationships must hold for its internal-energy change $\Delta U$, work by the gas $W$, and heat added $Q$?

A gas receives $480\,\mathrm{J}$ of heat and does $175\,\mathrm{J}$ of work. Using $\Delta U=Q-W$, what is its internal-energy change in joules?

An ideal gas is heated so that its temperature rises while its pressure remains constant. Given $C_P-C_V=R$, how do the heat added $Q$, internal-energy increase $\Delta U$, and work by the gas $W$ compare?

Two different processes take the same ideal gas between states with the same initial and final temperatures. What must be true about the internal-energy change $\Delta U$ in the two processes?

On a $p$-$V$ diagram, a gas first expands along a segment with signed area $+120\,\mathrm{J}$, then is compressed along a segment with signed area $-40\,\mathrm{J}$. What is the net work done by the gas over both segments?

True or false: Every adiabatic process of an ideal gas, including an irreversible one, must satisfy $pV^{\gamma}=\text{constant}$.

An ideal gas undergoes a reversible adiabatic compression. Which statement correctly describes the work done by the gas and the temperature change?

An ideal gas has $C_V=\frac{3}{2}R$. Using $C_P-C_V=R$, what is its heat-capacity ratio $\gamma=C_P/C_V$?

An ideal gas expands rapidly while its temperature remains constant. Which statement is justified?

A $2\,\mathrm{mol}$ ideal gas with $C_V=20\,\mathrm{J/(mol\cdot K)}$ is heated from $300\,\mathrm{K}$ to $320\,\mathrm{K}$ in a rigid, sealed container. Select all conclusions that follow.