Figure shows plot of (PV)/(T) and P for 2gm of oxygen gas at two different temperatures (i) The significance of dotted line (ii) The relation between T_(1) and T_(2) (iii) The value of (PV)/(T) where the curves meet on the x-axis.

Figure shows plot of (PV)/(T) and P for 2gm of oxygen gas at two diffe

1.	Figure shows plot of (PV)/(T) and P for 2gm of oxygen gas at two different temperatures (i) The significance of dotted line (ii) The relation between T_(1) and T_(2) (iii) The value of (PV)/(T) where the curves meet on the x-axis.
Answer» Solution :(i) For the dotted line, `(PV)/(T)`= constant It represents the behaviour of an ideal gas. (II) The gas equation PV=RT is true only at high temperature in fig, curves for `T_(1)` is CLOSER to the dotted line than curve for `T_(2)` Hence the relation between `T_(1) and T_(2)` is `T_(1) gt T_(2)` (III) `(PV)/(T)=mu, R`. So, the value of `(PV)/(T)` where the curves meet on the Y-axis gives the value of `mu R`. In this case `mu=(m)/M=(2)/(32)=(1)/(16)` `(PV)/(T)=mu R=(1)/(16) XX 8.31 =0.519J//K`