Question

The gas cylinder in Figure Q19.10 is well insulated except for the bottom surface, which is in contact with a block of ice.

The piston can slide without friction. The initial gas temperature is

a. During the process that occurs until

the gas reaches a new equilibrium, are

(i) $∆T$, (ii) W, and (iii) Q greater than, less than, or equal to zero? Explain.

b. Draw a pV diagram showing the process.

Short answer

(a) Negative, Positive, Negative

(b) A Line parallel with V is directed to the Left

Step-by-step solution

Explanation of pV graph 

pV graph is constructed wit h some specific variables deepens on pressure and volume of system.

 finding the major points on the diagrams.

a. (i)The temperature of the gas is connect with thermal contact due to this reason, temperature of gas is higher than ice. Due tom this reason $∆T$is negative.

(ii) As the volume is lower than initial state so the work done of gas is positive .

(iii) As heat is transferred from gas to environment, so the heat is negative.

b. A line parallel axis is drawn where the volume is decreased from right to left direction