States of Matter - Result Question 41

####41. At which one of the following temperature pressure conditions the deviation of a gas from ideal behaviour is expected to be minimum? [1996]

(a) 350K and 3atm.

(b) 550K and 1atm.

(c) 250K and 4atm.

(d) 450K and 2atm.

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Solution:

  1. (b) At low pressure and high temperature, real gas nearly behave like ideal gas. Hence, deviation is minimum from ideal behaviour.

AlAt high temperature and low pressure, the correction terms (an2/V2) and (nb) become negligible and thus, the deviation from ideal behaviour will be minimum.

42 .

(c) PV=nRT or P=nVRT=CRT.

Hence 1=1×0.082×T

T=10.082=12K



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