Calculate the values of δg, δf and δsuniv for:
a) vaporization of 39 g of benzene at its boiling temperature (80.1 °c, 1 bar);
b) adiabatic expansion of 0.100 mol of an ideal gas, in vacuo (joule's experiment), with an initial temperature of 300 k, if the initial volume is 2.00 dm3 and the final volume is 6.00 dm3.
note: process a) is reversible, isothermal and isobaric.
data:
r = 8.314 j mol-1 k-1
1bar = 105 pa
m (c6h6) = 78.66 g mol-1