boiling point, temperature at which the pressure exerted by the surroundings upon a liquid is equaled by the pressure exerted by the vapour of the liquid; under this condition, addition of heat results in the transformation of the liquid into its vapour without raising the temperature.
What is the principle of boiling?
When a liquid reaches its boiling point bubbles of gas form in it which rise into the surface and burst into the air. This process is called boiling. If the boiling liquid is heated more strongly the temperature does not rise but the liquid boils more quickly.
What is the property of boiling point?
Boiling point is the temperature at which the vapor pressure of a chemical equals atmospheric pressure. … Similar to melting point, a higher boiling point indicates greater inter-molecular forces and therefore less vapour pressure.
What is the boiling point?
The boiling point of a pure substance is the temperature at which the substance transitions from a liquid to the gaseous phase. At this point, the vapor pressure of the liquid is equal to the applied pressure on the liquid. … In addition, the change in the liquid composition during boiling will change the boiling point.
What is boiling point Class 12?
Boiling point is the temperature of a liquid at which its vapour pressure becomes equal to the atmospheric pressure.
What is boiling point for Class 9?
Boiling Point: The temperature at which the liquid boils and changes into gaseous state at the atmospheric pressure is called boiling point. For example, water boils at 100°C to form water vapour (at 76 cm pressure).