The graph drawn between pressure and temperature at constant volume for a given mass of different molecular weights M1 and M2are the straight lines as shown in the figure then
M2>M1
M1>M2
M1=M2
M31=M2
A
M31=M2
B
M1>M2
C
M2>M1
D
M1=M2
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Solution
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From ideal gas equation, PV = nRT = wMRT Slope of P-T curve = wRMV Since V = constant and w = constant, we get that the slope is inversely proportional to molecular weight Steeper the line, more is slope, less is molecular weight. So, M1>M2
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