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At low pressures, van der Waal’s equation is written as  The compressibility factor is then equal to:
  • a)
  • b)
  • c)
  • d)
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
At low pressures, van der Waal’s equation is written as The comp...
At low pressure,
(P+a/V^2)(V)=RT
PV+a/V=RT
So,PV/RT=1−a/VRT
therefore , Z = 1-a/VRT
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Community Answer
At low pressures, van der Waal’s equation is written as The comp...
By expanding the equation given in the question we get,

PV+ (a/V)=RT

By taking a/V to the right hand side we get,

PV= RT- (a/V)

Now, divide both LHS and RHS by RT. You'll get,

PV/RT=1- (a/VRT)

We know that Z=PV/RT,

Therefore, Z= 1 - (a/VRT)
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At low pressures, van der Waal’s equation is written as The compressibilityfactor is then equal to:a)b)c)d)Correct answer is option 'A'. Can you explain this answer?
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