Question

Volume versus temperature graphs for a given mass of an ideal gas are shown in Fig, at two different values of constant pressure. The correct relation between P₁ and P₂ is

(1) P₁ > P₂

(2) P₁ = P₂

(3) P₁ < P₂

(4) No conclusion can be drawn as we have insufficient information

Answer 1

(1) P₁ > P₂

From the gas equation

For P = constant, equation (1) is equation of a straight line. The slope of straight line is inversely proportion to pressure P. Therefore

P₁ > P₂