Question

Q1) A binary mixture of volatile liquids is in equilibrium with its vapor phase. The number of intensive variables you can vary independently while maintaining the equilibrium is:

a) 0

b) 1

c) 2

d) 3

e) 4

Q2) When the pressure increases by 10^5 atm, the molar Gibbs energy of graphite:

a) increases

b) decreases

c) stays the same

Q3) At 0 K, each water molecule of the ice lattice is known to have 1.5 hydrogen-bond configurations in average. The residual molar entropy of water must be:

a) Rln(0.5

b) R ln(2)

c) 1.5 R ln(2)

d) 2 R ln(1.5)