Question

explain with the help of formula the expanstion co-efficient of liquid and gas

Answer 1

At ordinary temperature gases expand more than solid and liquid. The coefficient of gas expansion is dependent on temperature. For an ideal gas, the coefficient of volume expansion at constant pressure can be found from the ideal gas equation:

PV = μRT

At constant pressure

PΔV = μR ΔT

ΔV/V = ΔT/T

i.e. αv = 1/T for ideal gas

At 0 °C, αv = 3.7 × 10-3 K–1, which is much larger than that for solids and liquids.