Vapor Pressure of Ethyl Ether at 40°C

What is the vapor pressure of ethyl ether at 40°C?

How can we determine the vapor pressure of ethyl ether at 40°C?

Vapor Pressure of Ethyl Ether at 40°C

The vapor pressure of ethyl ether at 40°C is approximately 160 mmHg.

Vapor pressure is the pressure exerted by the vapor of a substance in equilibrium with its liquid or solid phase. In the case of ethyl ether at 40°C, we can calculate its vapor pressure using the Antoine equation.

The Antoine equation is given by: log(P) = A - (B / (T + C)), where P is the vapor pressure in mmHg, T is the temperature in Kelvin, and A, B, and C are constants specific to the substance.

For ethyl ether, the Antoine equation constants are: A = 7.2477 B = 1584.4 C = -48.330

Converting 40°C to Kelvin gives us T = 313.15 K. Substituting these values into the equation gives: log(P) = 7.2477 - (1584.4 / (313.15 - 48.33)) log(P) = 5.192 P = 10^5.192 mmHg

Therefore, the vapor pressure of ethyl ether at 40°C is approximately 160 mmHg (or torr).