What is the effect of an increase in pressure on the boiling point of a liquid?
What is the effect of an increase in pressure on the boiling point of a liquid?
Higher the pressure higher the boiling point of a liquid.
Lower the pressure lower the boiling point of a liquid.
The reason is:
During heating of any liquid, the molecules start gaining energy.
Basically, at the boiling point of any liquid, the molecules on the surface of liquid tries to jump into the atmosphere by their energy. But the atmosphere above the liquid surface exerts pressure on the molecules. When the molecules gain enough energy to oppose the external pressure they start jumping into the atmosphere.
The boiling point of a liquid increases with increase in pressure. Since a liquid vaporises when molecules move faster and farther apart but while increasing pressure, you are applying an external force to hold molecules closer to each other.
Higher the pressure higher the boiling point of a liquid.
Lower the pressure lower the boiling point of a liquid.
The reason is:
During heating of any liquid, the molecules start gaining energy.
Basically, at the boiling point of any liquid, the molecules on the surface of liquid tries to jump into the atmosphere by their energy. But the atmosphere above the liquid surface exerts pressure on the molecules. When the molecules gain enough energy to oppose the external pressure they start jumping into the atmosphere.
The boiling point of a liquid increases with increase in pressure. Since a liquid vaporises when molecules move faster and farther apart but while increasing pressure, you are applying an external force to hold molecules closer to each other.
