Question

The Antoine constant for the component is given by \( A = 16.678, B = 3640.2, C = 219.61 \). The pressure (kPa) for the temperature 373 K is

• A. 100
• B. 200
• C. 37.6
• D. 50.8

Hint:

The Antoine equation relates temperature and vapor pressure for pure components.

Answer 1

The Correct Option is C

The Antoine equation is given by: \[ \log_{10} P = A - \frac{B}{T + C} \] Substitute \( A = 16.678, B = 3640.2, C = 219.61, T = 373 \, K \): \[ \log_{10} P = 16.678 - \frac{3640.2}{373 + 219.61} \approx 1.575 \] \[ P \approx 37.6 \, {kPa} \]