Question

In defining the ideal gas temperature scale, it is assumed that the pressure of the gas at constant volume is proportional to the temperature T. How can we verify whether this is true or not? Do we have to apply the kinetic theory of gases? Do we have to depend on experimental result that the pressure is proportional to temperature?

Answer 1

Explanation:

• Based on the ideal gas equation, the ideal gas thermometer is, PV=nRT.

• Where P is the pressure of the gas at constant volume V and n is the number of moles at temperature T.  

• Hence, P = constant××T.  

• Thus, according to this relation, the pressure of the gas will be directly proportional to the temperature of the gas if the volume of the gas used is constant. There is no need to use any experimental results or kinetic theory of gases.

Answer 2

Answer:

That pressure is called atmospheric pressure, or air pressure. It is the force exerted on a surface by the air above it as gravity pulls it to Earth. ... Oneatmosphere is 1,013 millibars, or 760 millimeters (29.92 inches) of mercury.Atmospheric pressure drops as altitude increases.