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Liquefaction of Gases and Critical Constants

Consider the ...

Question

Consider the following statements. The Van der Walls parameters are given as:

Select the correct alternates.

A

A alone

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B

A and B

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C

A, B and C

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D

B and C

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Solution

The correct option is D
B and C

$V_{C} = 3 b$

$P_{c} = \frac{a}{27 b^{2}}$

$T_{c} = \frac{8 a}{27 R b}$

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Similar questions

Consider the following statements.
If the van der waal's parameter of two gases are given as

$a (a t m L^{2} m o l^{- 2}) b (L^{2} m o l^{- 1})$
Gas X: $6.5 0056$
Gas Y: $8.0 0011$

Then $A : V_{c} (X) < V_{c} (Y)$
$B : p_{c} (X) < p_{c} (Y)$
$C : T_{c} (X) < T_{c} (Y)$

Select the correct alternate.

Q. If the van der Waals parameters of two gases are given as:

	$a / d m^{6} b a r m o l^{- 2}$	$b / d m^{3} b a r m o l^{- 1}$
Gas A	6.5	0.056
Gas B	18.0	0.011

Then which of the above statements is/are correct?

Q. Which of the following statements is/are correct for a gas obeying van der Waal's equation?

Q. For real gas van der Waals equation is written as:

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

a

b

are van der Waals constants.

Two sets of gases are:

(I) O_{2}, {C O}_{2}, H_{2}

H e

(I I) {C H}_{4}, O_{2}

H_{2}

The gases given in set-I in increasing order of

^{'} b^{'}

and gases given in set-II in decreasing order of

^{'} a^{'}

are arranged below. Select the correct order from the following:

Q. For real gases van der Waals equation is written as

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

Where 'a' and 'b' are van der Waals constants.
Two sets of gases are :
(I)

O_{2}, C O_{2}, H_{2}

C H_{4}, O_{2} a n d H_{2}

The gases given in set-I in increasing order of 'b' and gases given in set-II in decreasing order of 'a' are arranged below. Select the correct order from the following:

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Liquefaction of Gases and Critical Constants

Standard XII Chemistry

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