Question

200 J of heat is added to two gases, each in a sealed container. Gas 1 is in a rigid container that does not change volume. Gas 2 expands as it is heated, pushing out a piston that lifts a small weight. Which gas has the greater increase in its thermal energy?

Answer 1

Gas 1 has greater increase in thermal energy

Step-by-step explanation:

It is given that gas 1 is in rigid container means its volume is constant and so there is no change in volume means it experiences no work done, so at constant volume the heat absorbed and transferred by the gas 1 will be same as well as any internal heat will be not consumed.

On the other hand gas to expands and its volume changes and it will experience work done so it has less thermal energy than gas 1

Answer 2

Gas 1

Step-by-step explanation:

The reason being that on addition of 200 J of heat to both the gases enclosed in their respective chambers or containers, the change in volume is observed only in gas 2 while the volume of gas 1 remains same even after addition of the gas.

Therefore, the internal energy(heat) or the thermal energy of the system for gas 1 is not at all consumed and hence the absorption and transfer of the energy is same whereas Gas 2 expands on addition of extra heat by using up the temperature of the added heat.

Thus Gas 1 has higher increase in its thermal energy.