Consider one mole of an ideal gas with v degrees of freedom per molecule and pressure and volume p, V. In terms of v, p and V, what would be the slope of the curve on a p-V plot for
(a) isobaric expansion,
(b) isothermal expansion,
(c) adiabatic expansion?
(d) Do these have curvature and, if so, are they concave upwards or downwards?