A sample of 2.0mol of an ideal gas is initially at a pressure of 1.0×105Pa and a temperature of 300K. The gas is then allowed to expand until its volume doubles, while the pressure is maintained constant throughout the process.
(i) Identify the thermodynamic process undergone by the gas and write the relation connecting the variables for this process.
(ii) Calculate the final temperature of the gas.
(iii) Sketch the variation of volume with temperature for this gas starting from the initial state up to the final state on appropriately labelled axes.