At which situation intermolecular forces becomes effective ?

1.	At which situation intermolecular forces becomes effective ?
Answer» SOLUTION :At high pressure : Attraction forces becomes EFFECTIVE between molecules then CHANGE in pressure is `(an^(2))/(V^(2))`. `p_("ideal")=p_("real")+(an^(2))/(V^(2))` At high pressure : Repulsive forces becomes effective between molecules then change in volume in nb. `V_("ideal")=(V_("real")-nb)` At very LOW temperature : Intermolecular forces become significant. As the molecules travel with low average speed, these can be captured by one another due to attractive forces.

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