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