Gases Charles’ Law.

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Presentation transcript:

Gases Charles’ Law

Jacques Charles Around 1780 Gas laws are combination of many scientists’ work

Charles’ Law As the temperature of a gas increases, the volume increases. Pressure and number of gas particles remain constant

Symbolic Representation of Charles’ Law As temperature increases, volume increases Temperature (K) Volume (L) Volume and temperature are directly proportional How is this represented in the form of an equation?

Measuring Temperature Fahrenheit (oF): based on the freezing and melting point of water Celsius (oC): based on the freezing and melting point of water, but in base 10 Kelvin (K): based on the idea that at 0 Kelvin or absolute zero, atoms are NOT in motion

Converting between Celsius and Kelvin K = oC + 273 Example: The melting point of mercury is -39oC. What is this temperature in Kelvin?

Charles’ Law Example #1 A balloon has a volume of 1.00 L. The temperature of the room where the balloon is located is 273 K. If the room is heated to 300 K, what happens to the volume of the balloon? Step #1: Qualitative Assessment of the Problem Step #2: Quantitative Assessment of the Problem

Charles’ Law Example #2 Exactly 5.00 L of air at -50.0oC is warmed to 100.0oC. What is the new volume of the air if the pressure remains constant? Step #1: Qualitative Assessment of the Problem Step #2: Quantitative Assessment of the Problem