Charles' Law

    In Charles' law, pressure and moles are held constant which gives us the formula:

Note: Temperature must be in Kelvin

Example:

     A sample of gas at 15 degrees C and 1 atm has a volume of 2.58L. What volume will this gas occupy at 38 degrees C and 1 atm. 

First, start by listing the known variables. Pressure stays constant, so we do not have to worry about pressure in our calculations. 

• T1= 15 degrees C--> 15 + 273.15 = 288.15 K
• V1= 2.58 L
• V2= ?
• T2= 38 degrees C--> 38 + 273.15 = 311.15 K

Then, plug in the variable into the equation to solve for V2

• V1 x T2 / T1 = V2 
• V2 = (2.58 x 311.15) / 288.15
• V2= 2.79L

Other Gas Laws:

• Boyle's Law
• Avagadro's Law
• Dalton's Law