+91-87964 74404
FlagBACK
Question icon
Grade 11Physical Chemistry

The behavior of real gas is usually depicted by plotting compressibility factor z versus p at constant temperature. At high temperature and high pressure z is usually more than one(z>1). This fact can be explained by vanderwaals equation when a)constant a is negligible and not b b)constant b is not negligible and not a c)both constant a and b are negligible d)both constant a and b are not negligible

Profile image of Vatsal Koradia
15 Years agoGrade 11
Answers icon

1 Answer

Profile image of vikas askiitian expert
15 Years ago

at high pressure , molar volume is low so we cannot neglect b ...

at high pressure , correction term in pressure (a/v2) can be neglected so

(p+a/v2)(v-b) = RT

this equation becomes

P(v-b) = RT

PV - Pb = RT

PV/RT - Pb/RT = 1

Z = 1 + Pb/RT

or

Z > 1

option a) is correct

Other Related Questions on physical chemistry

question mark
Which of the following aqueous solutions remains neutral after
electrolysis
physical chemistry
0 Answer Available

Last Activity: 3 Years ago

question mark
In the reaction A + 2B ⇌ 2C, if 2 moles of A, 3 moles of B and 2 moles of C are placed in a 2 L flask and
the equilibrium concentration of C is 0.5 mol/L. The equilibrium constant (KC) for the reaction is.....and please tell how you know that the reaction is going forward .. imean how to calculate the reaction quotient ???
 
physical chemistry
1 Answer Available

Last Activity: 3 Years ago

question mark
True or false when an electron in ground state of hydrogen atom is excited with an energy that is greayer than e2-e1 but less than e3-e1 the electron will get excited n=2
physical chemistry
1 Answer Available

Last Activity: 3 Years ago

question mark
18 19 gram mixture of na2co3 and nahco3 on heating gives 2.2 gram CO2 gas find the percent nahco3 (by mass) in mixture
physical chemistry
1 Answer Available

Last Activity: 4 Years ago

question mark
A 100 cm cube solution of sodium carbonate is prepared by dissolving 8.653 g of salt in water the density of solution is 1.0816g per ml what are the molarity and molality of the solution.
 
physical chemistry
1 Answer Available

Last Activity: 4 Years ago