Chapter 13, Problem 2STP

Interpretation Introduction

Interpretation:

Which gas behaves ideally is to be determined.

Concept introduction:

Shape of the graph will predict about behavior of gas.

Answer to Problem 2STP

D

Explanation of Solution

The given graph is P-T graph of four gases. The gas which is ideal should follow all the gas laws. The law which shows variation of pressure with temperature is Gay-Lussac’s Law.

Gay-Lussac's law states that at constant volume, pressure is directly proportional to the temperature for a given amount of gas.

$\mathrm{P}\propto T$

Or

$\frac{\mathrm{P}}{T}=constant$

As the straight line graph is shown by gas D, therefore option D is correct.

Conclusion

Gases A, B, C are not ideal gases because their graphs are not straight line.