Question

In general gas equation PV=RT, Van der Waal’s introduced a correction factor a/V2

in pressure.

This term represents ---------​

Answer 1

Correct question: In the general gas equation PV=RT, Van der Waal introduced a correction factor  $\frac{a}{v^{2} }$ in pressure. This term represents -----.

Fill in the blanks.

Answer:

The correction factor $\frac{a}{v^{2} }$ introduced by Van der Waal in the general gas equation PV=RT represents pressure correction.

• In the general gas equation PV=RT, we consider the gas as an ideal gas. So, there are no intermolecular forces between the molecules.
• But for real gases, intermolecular forces act between the molecules.
• So, when a real gas molecule transfers its momentum into the wall, it is pulled by other gas molecules from the back and the momentum is reduced. So, the pressure on the wall decreases by some factor.
• That is why Van der Waal introduced a correction factor $\frac{a}{v^{2} }$ in the general gas equation PV=RT for real gases which represents pressure correction.

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