This document provides an introduction to Boyle's Law, which states that the volume of a gas is inversely proportional to its pressure when temperature and amount of gas remain constant. It defines Boyle's Law through a written formula, gives examples of how to use it to solve problems involving changes in gas pressure and volume, and explains how bubbles expand as they rise through decreasing pressure in air. Sample problems are provided to illustrate how to apply Boyle's Law calculations to find unknown pressure or volume.

1. Boyle’s Law:
An Introduction
JLBC

2. REVIEW:
Solve for 2 mins.
The pressure of a gas is found to
be 0.83 atm. Express this in
mmHg.

3. Solve for 2 mins.
The pressure of a gas is found to be 0.83 atm. Express this
in mmHg.
Solution: 1 atm = 760 mmHg
P = 0.83 atm x 760mmHg
1 atm
P = 630.8 mmHg

4. When we talk bout the volume of
matter, what are we referring to?
What happens when you put a
gas inside a container?

6. What is BOYLE’S LAW?
•Boyle’s law states that the volume V of a sample
of gas changes inversely with the pressure P of
the gas as long as the temperature T of the gas
and the number of moles n of the gas remain
constant.

7. How can you write Boyle’s law as a
formula?
•𝐩 ∝
𝐯
𝟏
P = pressure
•P1V1 = C V = volume
•P2V2 = C C = constant
•P1V1 = P2V2 (at constant T and n)

8. Using Boyle’s Law, explain how
bubbles expand as they rise in
the air.
Application:

9. Boyle’s Law states that the
pressure of a gas is inversely
proportional to its volume.
It can be written as
P1V1=P2V2.
Generalization:

10. Evaluation:
In a ¼ sheet of paper, complete the
following statement: (increase, decrease)
If there is a/an __________ in the pressure
of a gas, there will be a/an ____________ in
its volume. If there is a/an _____________
in the pressure, there will be a/an
_______________ in its volume.

11. Assignment:
Compute for the final pressure.
A sample of hydrogen gas has a
volume of 34 L at a pressure of
750 mmHg. What will be the
volume of the gas if the pressure
is increased to 760 mmHg.