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Liquid-Vapour Equillibrium

Q. What is th...

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Q. What is the dimensional equation of molar gas constant ?

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Q. The dimensional equation for the universal gas constant is

Q. The Van der Waal's equation of

^{'} n^{'}

moles of a real gas is

(P + \frac{a}{V^{2}}) (V - b) = n R T

P

V

T

is absolute temperature,

R

is molar gas constant and

a, b, c

are Van der Waal constants. The dimensional formula for

a b

Comprhension:
The van der Waal's gas equation is

(\begin{matrix} P + \frac{a}{V^{2}} \end{matrix}) (V - b) = R T

P

is the pressure,

V

is molar volume and

T

is the temperature of the given sample of gas.

R

is called molar gas constant,

a

b

are called van der Waal's constants.

The dimensional formula for

a

is same as that for

Q. The dimensional formula of the constant a in Vander Waal's gas equation

(P + \frac{a}{V^{2}}) (V - b) = R T

Q. The speed of sound in a gas is given by

v = \sqrt{\frac{γ R T}{M}}

R =

universal gas constant,

T =

M =

molar mass of gas
The dimensional formula of

γ

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Liquid-Vapour Equillibrium

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