Instant Homework Help for Kinetic Molecular Theory of Gases

Are you a university or school looking for an online tutoring partnership ?

Talk to Us

“If we assume that the last breath of, say, Julius Caesar has by now become thoroughly scattered through the atmosphere, then the chances are that each of us inhales one molecule of it with every breath we take.”


James Jeans, An Introduction To The Kinetic Theory Of Gases



Kinetic Molecular Theory of Gases - Law explained:


This law  defines the behaviour of gases and it consist of various assumptions are-


  • This state of matter contains a large number of gaseous particles that can move in any direction.  
  • These particles move in a straight line that collide with one another or with the walls and total no. of collisions are elastic in nature
  • These particles are much smaller than the distance between particles.
  • There is no force of attraction between gas particles
  • The average kinetic energy of molecules depends on the temperature 


2. Derived Average Kinetic Energy-


It is defined for the energy produced from the motion of the particles which is proportional to the absolute  temperature of the gas.

It depends on quantity like Temperature , mass of a gas molecule . average velocity and other certain conditions. 



3. Relationship Between P and  N- 


P – pressure as force exerted on the  walls of the container during collision 

N – No. of the particles

When the number of particles increases, The frequency of collisions with the walls also increases.

Hence, pressure increases with increase in gas molecules. 


3. Ideal Gas-


The kinetic molecular theory of gas followed by the laws are defined for the ideal gas , whose molecules have no interionic interactions. 

PV=nRT , R is a gas  constant 


4. Laws Explained by Kinetic Molecular Theory of Gas-




Keeping constant the pressure of a gas , the volume becomes proportional to the temperature of the gas. This is based on the fact that as mass of the particles is constant , this thereby increases and balances the pressure applied by the gas particles on the surface of the wall . Hence , the volume of gas becomes larger as temperature increases.


5. Boyle Law (P=1/v)-


Keeping temperature constant, The pressure applied by the gas molecules is inversely proportional to the volume.

I based on the constant Temperature conditions , which results in the same kinetic energy. Hence during collisions of high number , pressure of the gas also increases , but the volume decreases because now frequency of collision is high.


6. Avogadro Hypothesis (V-N)-


Keeping temperature and pressure, The volume of the gas is proportional to the number of gas molecules.


7. Dalton Law of Partial Pressures-


This law states that the total pressure of a mixture of gases must be the sum of partial pressure of each gas present in the mixture. These gases must be non-reactive with each other. 


8. Gay-Lussac Law  (P-T)-


By joseph Louis GAY-LUSSAC 

It is based on the assumption that keeping constant the volume and temperature of the gas.

The pressure applied is proportional to the temperature.  


9. Absolute Zero-


The 0K or -273.15°C is called absolute zero temperature. It can be represented in the V/T curve after extra plotting of the curve to zero. At this temperature, all molecular motions would cease.  


10. Real Gases –


The behaviour of real gases behaves differently as of ideal gases and deviates the laws because-

Real gas molecules both attract and repel due to interionic force of interaction.

True gas molecules have an infinite volume

But at high temperature and low pressure all the real gases behave ideally.  




Q 1. In a closed vessel , If total pressure is 6Atm by the mixtures of gases consisting of Hydrogen , oxygen and nitrogen with the partial pressure of 3atm , 2.5 . Then what will be the partial pressure exerted by nitrogen gas ?



Total pressure = 6 atm 
Applying DALTON LAW 
Total pressure = PH2  + PO2 + PN2
6= 3+ 2.5  + PN2  
0.5 atm = PN2


Answer: PN2 = 0.5 atm  


Q 2. Which law obeys only at constant volume conditions? 


Boyle law
Charles law
Gay lussac law
Dalton theory of partial pressure


Ans: Boyle law  


Q3 Which of the conditions are necessarily for Real gas to behave ideally?


Constant Temperature and pressure
High pressure and low temperature
Low pressure and high temperature
Low pressure and low temperature


Ans: Low pressure and high temperature



Hire a top Chemistry expert now!




Certified experts to help you with Kinetic molecular theory of matter:


Do you need help to understand the molecular origins of average kinetic energy? We’re here to help if you need to go down that road and complete your chemistry assignment without any stress. Whether you need help to understand how gas particles behave and respond to  changes, let us help you in revising general conception of matter.

Besides we’ll assist you to apply the theory to predict and explain gas laws by covering major concepts in detail. Be it  a College research paper where you need to assess, analyze and demonstrate the relationship between kinetic energy and molecular speed- we’ll leave no track uncovered.

Right from covering the postulates to understanding the main points- we provide self-explanatory notes or written material to help you grasp those elusive concepts. With the help of diagrams and in-depth explanations covering tricky topics, our top solvers ensure your academic success.

Get exam help from dependable homework solvers who will help you understand gas particles, molecules and cite enough examples to meet high writing standards.



Top solvers to assist in scoring A+ in Kinetic energy assignments:


Whether you are in high school or in college- our highly qualified dedicated project managers who will provide well structured solutions elaborating on theory to explain observable properties - get ready to cover formulas in detail.

Our team understands the importance of timely delivery and quality assistance, hence experts are available 24/7 as a quick aid to solve urgent queries. Right from covering “what is an ideal gas?” or working on “average kinetic energy formula”- let us reassure you that your work is in good hands. 

Not only do we ensure quick delivery but also maintain an unbeatable track record of maintaining quality standards.



To avail help with assignments on average kinetic energy, follow these few steps:


Hire academic experts at reasonable price by following these few simple steps:

Step 1: Fill out our quick help homework form by uploading worksheets and assignment instructions

Step 2: Reach an agreement with the hired helper on budgetary considerations and set a timeline

Step 3: Review your assignment before releasing payment for delivered draft from escrow

At TutorEye, we provide 100% authentic and unique assignments within set deadlines. Our quality assessment team checks each and every draft for plagiarism and ensures there are no copyright issues. We adhere to Money Refund policy to maintain trust and satisfaction of our students.


Let us help you with urgent submission requests today!



We Are Different from Others!

Help with Kinetic Molecular Theory Of Gases