Boyle's Law

What is the formula for Boyle's Law?

• P₁V₁=P₂V₂

• P₁V₁/P₂V₂

• P₁V₂=P₂V₁

• P₁/V₁=P₂/V₂

Answer explanation

The correct formula for Boyle's Law is P1V1=P2V2, which states that the initial pressure multiplied by the initial volume is equal to the final pressure multiplied by the final volume.

A gas occupies 4.98 L at 2.6 atm of pressure. What volume does it occupy at 1.8 atm pressure?

• 12.9 L

• 0.72 L

• 7.2 L

• 3.44 L

Answer explanation

To find the new volume, use Boyle's Law: P1V1 = P2V2. Plug in the values: (2.6 atm)(4.98 L) = (1.8 atm)(V2). Solve for V2 to get V2 = 7.2 L.

Which container will have a lower pressure?

• left

• right

• they both have the same pressure

• I don't know

Answer explanation

The left container will have a lower pressure because it has a larger volume, resulting in lower pressure according to Boyle's Law.

The relationship of which two variables are compared in Boyle's Law?

• pressure & volume

• volume & temperature

• temperature & pressure

• volume & moles (amount of gas)

Answer explanation

Boyle's Law compares the relationship between pressure and volume of a gas, showing that when pressure increases, volume decreases, and vice versa.

True or False: Gases can be compressed. 

• True

• False

Answer explanation

Gases can be compressed because their particles are far apart, allowing them to be squeezed closer together under pressure.

When Pressure increases then the Volume must...

• Increase

• decrease

Answer explanation

When pressure increases, the volume must decrease according to Boyle's Law, which states that pressure and volume are inversely proportional.

When Volume increases then Pressure must...

• Increase

• Decrease

Answer explanation

When volume increases, the molecules have more space to move around, resulting in fewer collisions and lower pressure. Therefore, pressure must decrease.