In a certain mountain range,water boils at 93°C.What is the atmospheric pressure under these conditions? The enthalpy of vaporization of water at 100°C is 40.7 kJ/mol.(R = 8.314 J/K·mol; 1 atm = 760 mmHg)
A) 2040 mmHg
B) 278 mmHg
C) 591 mmHg
D) 977 mmHg
E) 283 mmHg

Question

Quizplus · Accepted Answer

Using the Clausius-Clapeyron equation, we can calculate the atmospheric pressure at which water boils at 93°C. The equation is: ln(P2/P1) = -ΔHvap/R * (1/T2 - 1/T1). By substituting the given values and solving for P2, we find that the pressure is approximately 591 mmHg.

In a Certain Mountain Range,water Boils at 93°C