Ethanol ( OH)melts at -114 °C.The enthalpy of fusion is 5.02 kJ/mol.The specific heats of solid and liquid ethanol are 0.97 J/g-K and 2.3 J/g-K,respectively.How much heat (kJ)is needed to convert 25.0 g of solid ethanol at -135 °C to liquid ethanol at -60 °C?
A)207.3
B)-13.3
C)6.34
D)3617
E)8.63

Question

Ethanol (   OH)melts at -114 °C.The enthalpy of fusion is 5.02 kJ/mol.The specific heats of solid and liquid ethanol are 0.97 J/g-K and 2.3 J/g-K,respectively.How much heat (kJ)is needed to convert 25.0 g of solid ethanol at -135 °C to liquid ethanol at -60 °C?
A)207.3 
B)-13.3 
C)6.34 
D)3617 
E)8.63

Quizplus · Accepted Answer

The Answer of Ethanol (   OH)melts at -114 °C.The enthalpy of fusion is 5.02 kJ/mol.The specific heats of solid and liquid ethanol are 0.97 J/g-K and 2.3 J/g-K,respectively.How much heat (kJ)is needed to convert 25.0 g of solid ethanol at -135 °C to liquid ethanol at -60 °C?
A)207.3 
B)-13.3 
C)6.34 
D)3617 
E)8.63