Question

What is the relation between pressure and temperature in air.....pls answer .....tmw exam

Answer 1

Air temperature changes the air pressure. For eg; as the air warms up on the hot summer day, the molecules in the air become more active and they use up more individual space even though there is the same number of molecules. This causes an increase in the air pressure. When the air temperature cools at night, themolecules slow down and they donot move and bump into each other. This causes a decrease in air pressure. Air being a mixture of gases and vapour, behves in line with various laws of gases. One of this law known as Gay- Lussac's law states that that all other things being equal, the pressure of a gas increases with increase in temperature given a fixed quantity of air, contained in a space with fixed volume, its pressure will increase with temperature.