The figure represents PV vs P relation for CO | vedclass

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(A) For real gases, the deviation from ideal behavior is described by the compressibility factor $Z = PV/nRT$. For gases with weak intermolecular forc

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$1$

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(A) For real gases, the deviation from ideal behavior is described by the compressibility factor $Z = PV/nRT$. For gases with weak intermolecular forces like $H_2$ and $He$, the repulsive forces dominate even at low pressures, causing $PV$ to increase continuously with pressure. Among $H_2$ and $He$, $He$ has weaker intermolecular forces and a smaller molecular size, leading to a steeper slope in the $PV$ vs $P$ plot. In the given graph, curves $1$ and $2$ show a continuous increase in $PV$ with $P$. Curve $1$ has a steeper slope than curve $2$. Therefore, curve $1$ represents $He$ and curve $2$ represents $H_2$.

The figure represents $PV$ vs $P$ relation for $CO$, $CH_4$, $H_2$ and $He$ gases under identical conditions. Which curve, shown in the figure, represents $He$ gas?

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