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Standard XII

Chemistry

Real Gases

The van der W...

Question

The van der Waal's parameters for gases $A$ , $B$ , $C$ and $D$ are:
Gas
$a$ $(l i t r e^{2} a t m / m o l^{2})$
$b$ ( $l i t r e / m o l$ )
$A$
4.0
0.027
$B$
8.0
0.030
$C$
6.0
0.032
$D$
12.0
0.027
Which one of these gases has the highest critical temperature?

A

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B

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C

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D

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Solution

The correct option is D $D$
As we know,
Critical temperature
$T_{c} = \frac{8 a}{27 R b}$
and among given values
$a / b$ value is highest for $D$ so critical temperature is highest for $D$ .

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Similar questions

Q. The van der Waals parameters for gases

W, X, Y

and

Z

are:

\begin{matrix} G a s & a (a t m L^{2} m o l^{- 2}) & b (L M o l^{- 1}) W & 4.0 & 0.027 X & 8.0 & 0.030 Y & 6.0 & 0.032 Z & 12.0 & 0.027 \end{matrix}

Which one of these gases has the lowest critical temperature?

Q. The Vander Waal's parameters for gases W, X, Y and Z are

\begin{matrix} G a s & a (a t m L^{2} m o l^{- 2}) & b (L m o l^{- 1}) W & 4.0 & 0.027 X & 6.0 & 0.030 Y & 8.0 & 0.032 Z & 12.0 & 0.027 \end{matrix}

Which one of these gases has the highest critical temperature ?

The van der Waals' parameters for gases W,X,Y and Z are

$\begin{matrix} G a s & a (l i t r e^{2} - a t o m / m o l^{2}) & b (l i t r e / m o l) W & 4.0 & 0.027 X & 8.0 & 0.030 Y & 6.0 & 0.032 Z & 12.0 & 0.027 \end{matrix}$

Which one of these gases has the highest critical temperature?

Q. The vander Waal's parameters for gases

W, X, Y . Z

are

$G a s$	$a$ ( $a t m L^{2} m o l^{- 2}$ )	$b$ ( $L m o l^{- 1}$ )
$W$	$4.0$	$0.027$
$X$	$8.0$	$0.030$
$Y$	$6.0$	$0.032$
$Z$	$12.0$	$0.027$

Which one of these gases has the highest critical temperature ?

The van der Waals' parameters for gases W,X,Y and Z are

$\begin{matrix} G a s & a (l i t r e^{2} - a t o m / m o l^{2}) & b (l i t r e / m o l) W & 4.0 & 0.027 X & 8.0 & 0.030 Y & 6.0 & 0.032 Z & 12.0 & 0.027 \end{matrix}$

Which one of these gases has the highest critical temperature?

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Gas	$a$ $(l i t r e^{2} a t m / m o l^{2})$	$b$ ( $l i t r e / m o l$ )
$A$	4.0	0.027
$B$	8.0	0.030
$C$	6.0	0.032
$D$	12.0	0.027

The van der Waal's parameters for gases A, B, C and D are:Gasa (litre2atm/mol2) b ( litre/mol)A4.00.027B8.00.030C6.00.032D12.00.027Which one of these gases has the highest critical temperature?

The correct option is D DAs we know,Critical temperatureTc=8a27Rband among given values a/b value is highest for D so critical temperature is highest for D.

The van der Waal's parameters for gases $A$ , $B$ , $C$ and $D$ are:
Gas
$a$ $(l i t r e^{2} a t m / m o l^{2})$
$b$ ( $l i t r e / m o l$ )
$A$
4.0
0.027
$B$
8.0
0.030
$C$
6.0
0.032
$D$
12.0
0.027
Which one of these gases has the highest critical temperature?

The correct option is D $D$
As we know,
Critical temperature
$T_{c} = \frac{8 a}{27 R b}$
and among given values
$a / b$ value is highest for $D$ so critical temperature is highest for $D$ .