Question

Is it possible to increase the temperature of a gas without adding heat to it? If yes, then explain how? ​

Answer 1

Answer :

Yes

Reason :

According to 1st law of thermodynamics which states that the change in internal energy of a system is equal to the heat added to the system minus work done by the system.

ΔU = q - W

But here work is done on the system. So,

ΔU = q + W

Given,

Without adding heat. So,

∴ q = 0

Then,

ΔU = W

In adiabatic compression, work done on the system is positive.

∴ ΔU > 0

Thus,Temperature increases when internal energy increases.

Therefore,

Temperature of a gas can be increased without adding heat, if it is compressed adiabatically.

Hope this information helps!

Answer 2

$\huge\mathbb{ANSWER}$

Yes, it is possible to increase the temperature of a gas without adding heat to it, during adiabatic compression the temperature of a gas increases while no heat is given to it. Hence, internal energy of the gas increases due to which its temperature increases.

dU=q+w

When q=0

dU=w

So, internal energy can be increased if work done in a system in positive.

$\huge\bold\red{THANK YOU }$