Question

The vapor pressure of liquid butanol, C₄H₉OH, is 40.0 mm Hg at 326 K.

A sample of C₄H₉OH is placed in a closed, evacuated container of constant volume at a temperature of 472 K. It is found that all of the C₄H₉OH is in the vapor phase and that the pressure is 51.0 mm Hg. If the temperature in the container is reduced to 326 K, which of the following statements are correct?

Choose all that apply.

1. Only butanol vapor will be present.

2. Some of the vapor initially present will condense.

3. No condensation will occur.

4. Liquid butanol will be present.

5. The pressure in the container will be 40.0 mm Hg.