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Nature of Matter

The character...

Question

The characteristic equation of gases $P V = n R T$ holds good for :

A

monoatomic gases

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B

diatomic gas

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C

real gases

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D

ideal gases

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Solution

The correct option is D ideal gases
It is Ideal Gas law.

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Similar questions

Q. For real gases,

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

Q. Assertion :Van der Waals' equation is applicable only to non-ideal gases. Reason: Ideal gases obey the equation

P V = n R T

.

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

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

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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