a. II, V b. I, III, IV c. I, II, III d. II, IV, V e. I, II, IV Based on the phas

Question

a. II, V

b. I, III, IV

c. I, II, III

d. II, IV, V

e. I, II, IV

Based on the phase diagram shown below, which of the following statement are correct? Sublimation occurs at a point in the transformation that occurs along a straight line from point A to point F. C and E represent points where the gas and liquid phases are in equilibrium Delta Hvap can be measured at point B Molecules at point D have a greater average kinetic energy than those at point F The temperature at point E is called the critical temperature of the compound.

Explanation / Answer

e. I, II, and IV are true.

III is false, B is on the solid-liquid interface, so H(fusion) can be measured there, no H(vaporization)

V is false, E is called the Triple POint -- the critical point is a point beyond C in the diagram, where the gas-liquid line ends.

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