Problem 12.4:
a) Based on Figure 12-5, is the mixing of hydrazine and water an endothermic or exothermic process?
b) Calculate the excess enthalpy of mixing for a solution that contains 60% by mol hydrazine at 20 °C.
Problem 12.5:
a) Determine the phase of a mixture of hydrazine and water at 1 bar, 110 °C if the overall mol fraction of hydrazine is 20%. If the state is a mixture of vapor and liquid, report the amounts and compositions in each phase.
(Use Figure 12-5 to answer these questions.)