Part A

Calculate the enthalpy change, ?H, for the process in which 26.6 g of water is converted from liquid at 5.2 ?C to vapor at 25.0 ?C .

For water, ?Hvap = 44.0 kJ/mol at 25.0 ?C and Cs = 4.18 J/(g??C) for H2O(l).

Part B

How many grams of ice at -18.7 ?C can be completely converted to liquid at 20.3 ?C if the available heat for this process is 4.75Ã10³ kJ ?

For ice, use a specific heat of 2.01 J/(g??C) and ?Hfus=6.01kJ/mol.

Question

Part A

Calculate the enthalpy change, ?H, for the process in which 26.6 g of water is converted from liquid at 5.2 ?C to vapor at 25.0 ?C .

For water, ?Hvap = 44.0 kJ/mol at 25.0 ?C and Cs = 4.18 J/(g??C) for H2O(l).

Part B

How many grams of ice at -18.7 ?C can be completely converted to liquid at 20.3 ?C if the available heat for this process is 4.75Ã10³ kJ ?

For ice, use a specific heat of 2.01 J/(g??C) and ?Hfus=6.01kJ/mol.

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