Question

why is boyle law obeyed by N2,O2,Co2 only at low pressure and high temperature

Answer 1

The above gases are considered to be real gases.

no gases in this universe is perfectly Ideal . Boyle's law gives an equation for the ideal gases.

at low pressure and high temperature even real gases act like ideal gases.

So Boyle's law is valid only under these conditions.

hope it helps

Answer 2

if we give more and more temperature and give low pressure the gas is react as ideal gas