The volume-temperature graphs of a given mass | vedclass

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(A) According to the ideal gas equation,$PV = nRT$,which can be rearranged as $V = (\frac{nR}{P})T$.This is in the form of the linear equation $y = mx

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$P_1 > P_3 > P_2$

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(A) According to the ideal gas equation,$PV = nRT$,which can be rearranged as $V = (\frac{nR}{P})T$.This is in the form of the linear equation $y = mx$,where the slope $m = \frac{nR}{P}$.Since the slope is inversely proportional to pressure $(m \propto \frac{1}{P})$,a smaller slope corresponds to a higher pressure.From the given graph,the slope of the line for $P_1$ is the smallest,followed by $P_3$,and the slope for $P_2$ is the largest.Therefore,the order of pressures is $P_1 > P_3 > P_2$.

The volume-temperature graphs of a given mass of an ideal gas at constant pressures are shown below. What is the correct order of pressures?

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