Multiple Choice
Ethanol (C2H5OH) melts at -114 °C. The enthalpy of fusion is 5.02 kJ mol-1. The specific heats of solid and liquid ethanol are 0.97 J g-1 °C-1 and 2.3 J g-1 °C-1, respectively. How much heat (kJ) is needed to convert 25.0 g of solid ethanol at -135 °C to liquid ethanol at -50 °C?
A) 207.3 kJ
B) -12.7 kJ
C) 6.91 kJ
D) 4192 kJ
E) 9.21 kJ
Correct Answer:
Verified
Correct Answer:
Verified
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