2 - The Ideal Gas Equation

What are the certain trends that gases and volatile liquids follow under standard conditions?

• pressure is proportional to temperature

• Volume is proportional to temperature

• Pressure and volume are inversely proportional

What is the ideal gas equation?

What unit must pressure always be in, in the ideal gas equation?

Pressure must always be in Pa (pascals)

If given kPa, how do you covert it into Pa?

Multiply by 1000 to convert to Pa

What unit must volume always be in?

It must always be in m³ (meters cubed)

If you’re given volume in cm³ or dm³ , how can you convert it into m³ ?

Cm³ into m³: divide by 100³ or 1 million since 1m=100cm

Dm³ into m³: divide by 10³ or 1000 since 1m=10dm

What are the unit conversions between cm, m and dm (both linear and cubed)?

Linear :

• 1m = 100cm

• 1m = 10dm

• 1dm=10cm

Cubic:

• 1m³ = 1000000cm³ (100³)

• 1m³ = 1000dm³

• 1dm³ = 1000cm³

What unit must the temperature always be in, in the ideal gas equation?

Temperature must always be in degrees kelvin = K

How do you convert temperature from degrees Celsius to degrees kelvin?

To convert Celsius to Kelvin = add 273 (C + 273)

To convert Kelvin to Celsius = minus 273 ( K - 273)

What unit must the mass always be in, in the ideal gas equation?

It must always be in grams (g)

What are the unit conversions between tonne, kg, g and mg?

What is the R in the ideal gas equation, and what’s its value?

The R is the gas constant

Value = 8.32 JK-1/mol-1