(B) The Van der Waals equation is $(P + \frac{an^2}{V^2})(V - nb) = nRT$. From the pressure correction term,we have $P = \frac{an^2}{V^2}$. Rearrangin

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

(B) The Van der Waals equation is $(P + \frac{an^2}{V^2})(V - nb) = nRT$. From the pressure correction term,we have $P = \frac{an^2}{V^2}$. Rearranging for $a$,we get $a = \frac{P \cdot V^2}{n^2}$. Substituting the units: $P$ is in $atm$,$V$ is in $L$,and $n$ is in $mol$. Therefore,the unit of $a$ is $\frac{atm \cdot L^2}{mol^2}$ or $atm \cdot L^2 \cdot mol^{-2}$.

Class 11 Chemistry States of Matter Real gases and Vander waal’s equation

Medium

What is the unit of the Van der Waals constant $a$?

A
$L \cdot mol^{-1}$
B
$atm \cdot L^2 \cdot mol^{-2}$
C
$atm \cdot L \cdot mol^{-1}$
D
$mol^2 \cdot atm \cdot L^{-2}$

Explore More

Browse All

Question Bank

All Subjects

Class 11 Questions

Class 11

Chemistry Questions

Chapter

States of Matter

Subtopic

Real gases and Vander waal’s equation

What are the values of $Z$ for $CO_2, CH_4$,and $O_2$ at $200 \ bar$ and $900 \ bar$ pressure?

Easy

View Solution

When is deviation more in the behaviour of a gas from the ideal gas equation $PV = nRT$?

EasyAIPMT 1993

View Solution

$1 \ mol$ of a real gas is kept at a high pressure of $100 \ bar$ at $300 \ K$. If the van der Waals constant $b$ is $0.005 \ L \ mol^{-1}$, what are the values of the compressibility factor $Z$ of the gas and the $\%$ deviation of volume from ideality?
$Z$ $\%$ Deviation

MediumTS EAMCET 2022

View Solution

Van der Waal's equation $\left[ p + \frac{a}{V^2} \right] (V - b) = nRT$ is applicable for

EasyAIIMS 1998

View Solution

What happens to a real gas at high pressure and low temperature?

Easy

View Solution

Vedclass Products

For Students

Vedclass Test Series

Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.

Start Free Trial

For Teachers

Exam Paper Generator

Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.

Try Free

For Institutes

Online Exam Module

Live online exams with unlimited students, 360° analytics & white-label branding.

See Demo

What is the unit of the Van der Waals constant $a$?

Similar Questions

What are the values of $Z$ for $CO_2, CH_4$,and $O_2$ at $200 \ bar$ and $900 \ bar$ pressure?

When is deviation more in the behaviour of a gas from the ideal gas equation $PV = nRT$?

$1 \ mol$ of a real gas is kept at a high pressure of $100 \ bar$ at $300 \ K$. If the van der Waals constant $b$ is $0.005 \ L \ mol^{-1}$, what are the values of the compressibility factor $Z$ of the gas and the $\%$ deviation of volume from ideality?$Z$$\%$ Deviation

Van der Waal's equation $\left[ p + \frac{a}{V^2} \right] (V - b) = nRT$ is applicable for

What happens to a real gas at high pressure and low temperature?

Vedclass Test Series

Exam Paper Generator

Online Exam Module

$1 \ mol$ of a real gas is kept at a high pressure of $100 \ bar$ at $300 \ K$. If the van der Waals constant $b$ is $0.005 \ L \ mol^{-1}$, what are the values of the compressibility factor $Z$ of the gas and the $\%$ deviation of volume from ideality?
$Z$ $\%$ Deviation