Question
Asked Nov 21, 2019
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Calculate the pressure that CCl4 will exert at 38 ∘C if 1.00 mol occupies 34.0 L , assuming that CCl4 obeys the van der Waals equation. (Values for the van der Waals constants are a=20.4, b=0.1383.)

 
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Expert Answer

Step 1

Given:

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Temperature,T 38' C = 273+38 = 311K Volume.V 34L mol,n 1.0mol atm.I a 20.4 mol L b 0.1383 mol

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Step 2

The Vander Waals equation:

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P+ nb) = nRT

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Step 3

Substituting the respective values...

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nb) = nRT atmL (Imol) 20.4- mol atm L 1molx 0.08206 Kmol 34L-1molx0.1383 mol P+ (311K) (34.02 (P+0.01765amm)(33.8617L) =25.52066atm.L (25.52066amm L) (33.8617L) P 0.7537atm-0.01765 am P 0.7360atm -0.01765 atm

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