Question

What conclusion would you draw from the following graphs for an ideal gas?

• A. As the temperature is reduced, the volume as well as pressure increase
• B. As the temperature is reduced, the volume becomes zero and the pressure reaches infinity
• C. As the temperature is reduced, the pressure decrease
• D. A point is reached where, theoretically, the volume become zero

Answer 1

Answer: (C), (D)

The correct options are
C A point is reached where, theoretically, the volume become zero
D As the temperature is reduced, the pressure decrease

(A) and (C); When the temperature decreases, the pressure and the volume decrease. Hence, the option A is wrong conclusion and C is right conclusion.

(B) and (D); As the temperature is reduced to 0 K, both volume and pressure reaches 0. Thus option B is wrong conclusion and option D is the right conclusion.

at constant volume

$P\propto T$

$P=KT$

$P=K(t^{0}C+273.15)$

at constant P

$V\propto T$

$V=KT$

$V=K(t^{0}C+273.15)$