Find the Temperature at Which Ethanol Boils on a Day $\circ$

Multiple Choice

Find the temperature at which ethanol boils on a day in the mountains when the barometric pressure is 547 mmHg. (Given: The heat of vaporization of ethanol is 39.3 kJ/mol; the normal boiling point of ethanol is 78.3 ^$\circ$ C.)

A) 10.0 ^$\circ$ C
B) 69.9 ^$\circ$ C
C) 74.6 ^$\circ$ C
D) 76.5 ^$\circ$ C
E) 77.9 ^$\circ$ C