Consider the reversible isothermal expansion of an ideal gas in a closed system at two different temperatures `T_(1)` and `T_(2)(T_(1)ltT_(2))`. The correct graphical depiction of the dependence of work done (w) on the final volume (V) is:

The isothermal diagram of a gas at three different temperatures T_(1),T_(2) and T_(3) , is show in the given figure .Then

The amount of work done in an adiabatic expansion from temperature T to T_(1) is

Figure shows graphs of pressure versus density for an ideal gas at two temperatures T_(1) and T_(2) Which is correct ? .

Figure shows graphs of pressure versus density for an ideal gas at two temperatures T_(1) and T_(2) Which is correct ? .

(i) 1 mol of an ideal gas expands isothermally and reversible from (P_(1)V_(1)T) to (P_(2)V_(2)T) . Write down the equation showinig the amount of heat absorbed by the given ideal gas. (ii) In an isothermal expansion of an ideal gas, the pressure of the gas decreases from P_(1) to P_(2) . write down the equation of work done by the gas in this process. (iii) The temperature of 1 mol of an ideal gas is increased from T_(1) and T_(2) . write down the equations for the changes in enthalpy and internal energy.