Question

A whip cream container that is 0.0C is placed into a campfire and its temperature is raised to 300 C, what was the initial pressure in the container if the final pressure is 19 atmospheres?

Answer 1

We know that equation,

P₁/T₁ = P₂/T₂ thus,

P₁ = T₁P₂/T₂ where,

P₁ = initial pressure =?

P₂ = final pressure = 19 atm

T₁ = initial tempreture = 0⁰C = 273.15 K

T₂ = final tempreture = 300⁰C = 573.15K

substitute the value in above equation

P₁ = 273.15 $\times$19 / 573.15 = 9.055 atm

initial pressure in the container = 9.055 atm

Note - I have converted tempreture in kelvin because 0⁰C mulply by 19 give answer 0 so only for mathematical calculation i have converted in kelvin otherwise not need to convert in kelvin.