6 Real gases deviate the most from ideal gases under the fol

6. Real gases deviate the most from ideal gases under the following conditions

a. very low pressure and very low temperature

b. very high pressure and very high temperature

c. very low pressure and very high temperature

d. very high pressure and very low temperature

7. A diatomic gas has a density of 3.17 g/L. What is the identity of this gas? Support your answer

Solution

Ans 6 d) very high pressure and very low pressure

This can be determined using the vanderwaal equation :

P(V-nb) = nRT

At high pressures , the volume of gas becomes very small , so nb term corrects for the volume of real gas larger than the ideal gas.