Question 1
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°C.)
◦ 10.0°C
◦ 69.9°C
◦ 74.6°C
◦ 76.5°C
◦ 77.9°C
Question 2
Find the temperature at which water boils on a day in the mountains when the barometric pressure is 593 mmHg. (Given: the heat of vaporization of water is 40.79 kJ/mol)
◦ 41.5°C
◦ 68.1°C
◦ 93.1°C
◦ 97.0°C
◦ 117°C