Gas Pressure and Temperature

The pressure law states that ​ (a)   is ​ (b)   to ​ (c)   , measured in ​ (d)   .

• pressure
• directly proportional
• absolute temperature
• Kelvin
• volume
• related
• Celsius

What is the Pressure Law formula?

• Fahrenheit
• Kelvin
• Rankine
• Celsius

If P₁ = 200,000 Pa and T₁ = 127K and;

T₂ = 254K, find P₂ in Pascals.

(a)  

If P₁ = 2 Pa and T₁ = 300K and;

P₂ = 5Pa, find T₂ in Kelvin.

(a)  

If P₁ = 1.2x10⁵ Pa and T₁ = ? and;

P₂ = 3.0x10⁵ Pa, T₂ = 600K.

Find T₁ in Kelvin

(a)  

If P₁ = 100 kPa and T₁ = 27^oC and;

P₂ = ? Pa, T₂ = 270^oC.

Find P₂ in Pascals

(a)  

Dr Limburn takes a sealed test-tube of air with a pressure of 100 000Pa. He heats the test-tube from 20^oC to 50^oC. What is the new pressure of the air inside the test tube?

• 110 kPa

• 115 000 Pa

• 250 kPa

• 250 000 Pa

Mrs Thomas sails on an inflatable boat to Scotland. When she inflated the boat it had a pressure of 180kPa. By the time she reaches Scotland, the boat now has a pressure of 165kPa. If it is -5^oC in Scotland, what was the temperature in Celsius when Mrs Thomas left the South Coast?

• 19.4^oC

• 292.4^oC

• 16.8^oC

• 13.6^oC

Why does the pressure increase when a gas is heated in a container?

• The particles collide with the walls more frequently

• The particles collide with the walls with more force

• The particles collide with each other at higher speeds

• The particles become less dense