Charles’ Law

Definition: Charles’ Law describes the relationship between Temperature (T) and Volume (V) while the number of moles (n) and pressure (P) remain constant.

Relation: T and V are directly proportional so as temperature increases, volume increases—and vise versa

T α V





Up, Up, and Away! A hot-air balloon uses Charles’ Law to help it fly. As the gas inside the balloon is heated (↑ T), the balloon inflates (↑V). The warm air then rises, and so does the balloon.

Problem: A sample of carbon monoxide gas occupies 3.20 L at 125°C. At what temperature will the gas occupy a volume of 1.54 L if the pressure remains constant?


T1= 125°C → K Conversion Required → 125°C + 273 = 398K
T2= ?


Leave a Reply

Fill in your details below or click an icon to log in: Logo

You are commenting using your account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s