the temperature of 100ml

Question

the temperature of 100ml of gas sample increase from 25c to 80c. what is the final volume of this gas if the pressure is kept constant?

Answer 1

Use Charles' Law, which applies when the pressure is held constant:

 

V₁/T₁ = V₂/T₂

 

Where:

• V₁ = initial volume = 100 ml
• T₁ = initial temp = 25c
• V₂ = final volume = unknown
• T₂ = final temp = 80c

 

V₂ = V₁*(T₂/T₁)

V₂ = (100 ml)*(80c/25c) = 320 ml