Figure shows plot of `PV//T` versus `P"for" 1.00 xx 10^(-3)` kg of oxygen gas at two different temperatures.
(i) What does the dotted plot signify?
(ii) Which is true . `T_(1) gt T_(2) "or" T_(1) lt T_(2)`?
(iii) What is the value of `PV//T` where the curves meet on the y-axis?

Answer

(i) ideal gas behaviour (ii) `T_(1) gt T_(2)` (iii) 0.26JK^(-1)

Explanation

(i) Dotted lines correspond to ideal gas
(ii) `T_(1) gt T_(2)`
(On high temp. real gas behaves as ideal gas)
(iii) `(PV)/(T) = (m)/(M)R = (10^(-3))/(32 xx 10^(-3)) xx 8.314 = 0.26J//K`