Question

What happens when vapour pressure is greater than atmospheric pressure?

Answer 1

As we know that air is the one of the important things in our life. In the world, without air nothing is surveyed. For human beings, breathing purpose air is the important thing for inhaling and exhaling. For human respiration, oxygen is used for inhalation of breathing and carbon dioxide is exhaled gas. This inhale and exhale gases are important for human lifestyle to survey in the world. Each and every gas has unique properties and unique nature in the atmosphere. One gas is not able to replace another gas in the environment.

Complete answer:
We need to know that matters are divided into three types. There are solids, liquids and gas.
The vapour pressure of the liquid is nothing but the natural pressure of the liquid. If one liquid having low vapour pressure means less volatile and liquid having high vapour pressure means easily volatile.
Examples of liquid having low vapour pressure means less volatile is oil and wax and example of liquid having high vapour pressure means easily volatile is petrol and kerosene.
Evaporation means the conversion of liquid to gaseous nature of the molecules. It depends on the temperature and pressure of the molecules. When vapour pressure of liquid reaches the atmospheric pressure, it starts boiling, the point is known as boiling point of liquid.
When vapour pressure is greater than atmospheric pressure, it starts boiling liquid to the gaseous nature of the molecules.

Note:
All the gases are not ideal in nature. Depending on the condition of the gas it behaves as ideal gas. There are three units for measuring the temperature. There are degrees Celsius, kelvin and Fahrenheit. The mole is one of the main units in chemistry. The moles of the molecule depend on the mass of the molecule and molecular mass of the molecule. Chemical reactions are measured by moles only.