Ice liquefies at 0°C. Is liquefaction an exothermic/endothermic? At which range temperature is it spontaneous?

Ice liquefies at 0°C. Is liquefaction an exothermic or endothermic process? In what temperature range is the process spontaneous at an external pressure of 1.00 atm?





a. endothermic, T %26gt; 100°C


b. endothermic, 0°C %26lt; T %26lt; 100°C


c. exothermic, T %26gt; 100°C


d. exothermic, 0°C %26lt; T %26lt; 100°C


e. endothermic, never

Ice liquefies at 0°C. Is liquefaction an exothermic/endothermic? At which range temperature is it spontaneous?
Option b) As it was formerly stated, the liquefaction is always an endothermic process at STP conditions.





It is spontaneous at the range (0,100)
Reply:b) liquefication is alway endothermic





ref: http://www.nasaexplores.com/show_912_tea...
Reply:Ice melts at 0 degrees C when the heat of fusion is added to it for each gram. It can also sublime at lower temperatures in dry windy areas. Liquification is an endothemic process as heat has to be added. Heat always has to be added, but it can take that heat from the environment at temperatures above 0C. Answer e is correct, as heat always has to be added, the heat of fusion for ice.(80 calories /gram or 335 J/gram)
Reply:e...Endothermic, never.
Reply:You're asking me for the melting point of ice? %26gt; 0 degrees celcius.


It is an endothermic process.