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Ideal Gas Equation from KTG

PV=nRT is exa...

Question

PV=nRT is exactly true for all gases under all conditions.

A

True

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B

False

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Solution

The correct option is B False
PV=nRT is called ideal gas law for a reason! It is only a good approximation under certain conditions.

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Similar questions

Q. PV=nRT is exactly true for all gases under all conditions.

Q. For real gases,

\frac{P V}{n R T} \neq ?

Q. The characteristic equation of gases

P V = n R T

holds good for :

Q. Equal volumes of all gases contain equal number of molecules under similar conditions of temperature and pressure.
If true enter 1, else enter 0.

The gases which strictly follow the general equation

(P V = n R T)

are called ideal or perfect gases. Actually, there is no gas which is perfect or ideal. A real gas is one which actually exists, whether it obeys gas laws strictly or not. Under ordinary conditions, only those gases nearly behave as ideal or perfect which have very low boiling points such as nitrogen, hydrogen, etc. The most easily liquefiable and highly soluble gases such as ammonia, carbon dioxide, sulphur dioxide show large deviations.
A very convenient method of studying deviation of real gases from ideal behaviour is through a compressibility factor

(Z)

.

Z = \frac{P V}{n R T}

Z = 1

, for ideal gases.
(ii)

Z \neq 1

, for real gases.

Consider the equation

Z = \frac{P V}{n R T}

; which of the following statements is correct?

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Ideal Gas Equation from KTG

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