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  • What is the relation between the temperatures in the below graph which represents isothermal expansion of gas at different temperatures? <img src="data:image/png;base64,iVBORw0KGgoAAAANSU

What is the relation between the temperatures in the below graph which represents isothermal expansion of gas at different temperatures?

Option: 1

T1>T2>T3


Option: 2

T2>T3>T1


Option: 3

T3>T2>T1


Option: 4

No relationship can be established


Answers (1)

best_answer

In isothermal process, Temperature is constant.
Also we know for an ideal gas,  PV=nRT

As we can see T is constant, we can say PV = k (here k is constant).

This equation of PV = k represents the equation of hyperbola.

The more is the value of k the farther the curve is from origin. So we can conclude that
T_3>T_2>T_1
Hence, Option number (3) is correct

Posted by

Ritika Jonwal

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