Question

A boiling point for an unknown liquid was measured at 92.5 C. The atmospheric pressure was recorded at 740 torr. When correcting the bp for pressure, the new value will be closest to which value?

Answer 1

In General, the boiling point of a liquid is the temperature at which the vapour pressure of the liquid is equal to the standard sea-level atmospheric pressure (760 mm or 29.92 inches of mercury).

The boiling point (92.5oC) of unknown liquid was measured at 740 torr pressure. This value equals to 740mm Hg.

After correcting the pressure;

that means at 760 torr the boiling point of liquid is 93.2 oC.

Because a liquid at high pressure having a high boiling point. the boiling increases at 760 torr or 760 mmHg pressure.