The variation of volume V , with temperature T , keeping pressure constant is called the coefficient of thermal expansion ( ) of a gas. i.e., = 1 V ( V T )_P . For an ideal gas is equal to

Step-by-step solution

For n moles of an ideal gas P V=n R T or V=n R T P Differentiating with respect to T at constant P , we have aligned & ( V T )_P= n R P = V T & = 1 V ( V T )_P= 1 V V T = 1 T aligned