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Question

If we plot a graph between volume (L) and temperature (C) by studying their variation for 2.0 g of certain ideal gas at 1 bar pressure, the graph obtained is a straight line which is

A
Parallel to the temperature axis
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B
Parallel to the volume axis
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C
Meets the temperature axis where T=0,V=0
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D
Meets the temperature axis where V=0;T=273.15
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Solution

The correct option is D Meets the temperature axis where V=0;T=273.15
Given Weight =2g
Here Pressure and n (no af moles) are constant
Applying ideal gas equation.
PV=NRTV=nRPTV=K.TV is zero at 0 K=-273.15C
The straight line meets the temperature axis.
where V=0 , T=-273.15C.

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