If you're seeing this message, it means we're having trouble loading external resources on our website.

If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked.

### Course: Physical Chemistry (Essentials) - Class 11>Unit 5

Lesson 3: Gas Laws

# Boyle's law

Explore Robert Boyle's 17th-century experiments with gases that led to Boyle's Law. Discover how Boyle's Law, demonstrating the inverse relationship between gas pressure and volume, laid the groundwork for the ideal gas equation. This historical journey illuminates key principles in gas behavior. Created by Ryan Scott Patton.

## Want to join the conversation?

• Why would Robert Boyles Wife be excited about the J tube?
• I think he's being sarcastic, and he actually means that she probably didn't like it.
• actually robert boyle didn't do the Experiment himself, he just took it from Henry Power. https://en.wikipedia.org/wiki/Henry_Power
• I still don't understand very well. So, do you have to find the inverse of your values in order to do the equation? And whats with the equation? So is it P1V1=P2V2, or V=m 1/p, or V=k(1/p), or P1V1=PfVf? PLEASE SOMEBODY EXPLAIN! :'(
• Hello Nicole. I think the equation is P1V1 = P2V2. You can derive this from the Combined Gas Equation (P1V1/T1 = P2V2/T2). Since Boyle's law says it is at constant temperature, the temperatures cancel each other so you are left with P1V1 = P2V2 which is Boyle's Law.
• umm...also,can someone please explain what happened in the video?-im so sorry . i don't mean to be disrespectful or anything,but I'm kinda confused.
• so basically high pressure means low volume and low pressure means higher volume. Boyle's law relates pressure and volume of a constant amount of gas at constant temparature.
(1 vote)
• at when he draw the second graph he took volume on the y axis but in the first graph he took pressure on the y axis .. why he did so?
• Also, what is the difference between a Real Gas and an Ideal gas?
• Ideal gas is hypothetical
(1 vote)
• What does Boyle's Law apparently state?
• pv=pla please explain for me about a which is always constant
• If a gas occupies 2.60 liters at a pressure of 1.00 atm, what will be its volume at a pressure of 3.50 arm?
• P1V1=P2V2 P1=1.00atm/V1=2.60L P2=3.50atm/V2=?

we have to use the formula P1V1/P2

(1.00atm)(2.60L)/3.50atm = 0.74L is the answer
(1 vote)
• What's that thing called "atmospheric pressure?" The pressure of the atmosphere? Or something else? And what's a "J tube?"
(1 vote)
• Thanks, Fathima. I'll make sure to remember that.