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The critical volume of a gas is 0.072 lit. mo1-1. The radius of the molecule will be, in cm
  • a)
  • b)
  • c)
  • d)
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
The critical volume of a gas is 0.072 lit. mo1-1. The radius of the mo...
The critical volume of three times the Van der Waals constant 'b'.
b=16/3πr3NA;Vc=3b=0.072 lit. mol−1
The expression for the magnitude of the Van der Waals constant, b, for the gas is b=16/3πr3NA
​Thus 3b=16/3πr3NA×3
Substitute values in the above expression,
0.072×1000=16/3×6.023×1023×π×r3×3
Thus r=(3/4π×10−23)1/3cm.
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The critical volume of a gas is 0.072 lit. mo1-1. The radius of the mo...
The critical volume of three times the Van der Waals constant 'b'.
b=16/3πr3NA;Vc=3b=0.072 lit. mol−1
The expression for the magnitude of the Van der Waals constant, b, for the gas is b=16/3πr3NA
​Thus 3b=16/3πr3NA×3
Substitute values in the above expression,
0.072×1000=16/3×6.023×1023×π×r3×3
Thus r=(3/4π×10−23)1/3cm.
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Community Answer
The critical volume of a gas is 0.072 lit. mo1-1. The radius of the mo...
Option a is correct
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