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why is force of attraction of O 2 less than CH 4 in the deviation of real gas from ideal gas graph when oxygen has molecular wt. 32 while methane has 16?

why is force of attraction of O2 less than CHin the deviation of real gas from ideal gas graph when oxygen has molecular wt. 32 while methane has 16?

Grade:11

1 Answers

shrinath gupta
34 Points
6 years ago
Note .. Both Oxygen and Methane are non polar and have weak van der waal forces.
Oxygen has 32 molecular wt. while methane has 16 molecular wt.. 32 molecular wt. indicates it must have more volume  but still force of attraction is more in methane than in oxygen. this is because vander waal forces depend upon surface area of molecule.. Oxygen has double bond while methane has single bond along with tetrahedral structure. so surface area of methane is more than oxygen. therefore force of attraction is more in methane than oxygen gas.

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