Conceptual Connection 17.4

Part A

Which statement is true regarding the sublimation of dry ice(solid CO2)?

	?H is positive,?S is negative,and ?G is positive at all temperatures.
	?H is positive, ?S ispositive, and ?G is positive at low temperatureand negative at high temperature.
	?H is negative,?S is positive,and ?G is negative at all temperatures.
	?H is negative, ?S isnegative, and ?G is negative at low temperatureand positive at high temperature.