a cylinder with a movable piston contains 250 cm3 air at 10°C. if the pressure is kept constant, at what temperature would you expect the volume to be 150 cm3?

Respuesta :

Neetoo

Answer:

T₂ = 169.89 K

Explanation:

Given data:

Initial volume = 250 cm³

Initial temperature = 10°C (10+273.15 K = 283.15 K)

Final temperature = ?

Final volume = 150 cm³

Solution:

The given problem will be solve through the Charles Law.

According to this law, The volume of given amount of a gas is directly proportional to its temperature at constant number of moles and pressure.

Mathematical expression:

V₁/T₁ = V₂/T₂

V₁ = Initial volume

T₁ = Initial temperature

V₂ = Final volume  

T₂ = Final temperature

Now we will put the values in formula.

V₁/T₁ = V₂/T₂

T₂ = T₁V₂/V₁  

T₂ = 283.15 K × 150 cm³ /  250 cm³

T₂ = 42472.5 K. cm³  / 250 cm³

T₂ = 169.89 K

If pressure of the given gas is kept constant then volume of the gas at 150 cm³ is 169.89 K.

What is Charles law?

Charles law states that at constant pressure and moles of gas, volume of gas is directly proportional to the temperature of gas and this law will represent as:

V₁/T₁ = V₂/T₂, where

V₁ = Initial volume = 250 cm³

T₁ = Initial temperature = 10°C = 283.15 K

V₂ = Final volume = 150 cm³

T₂ = Final temperature = to find?

T₂ = 283.15 K × 150 cm³ /  250 cm³

T₂ = 42472.5 K. cm³  / 250 cm³

T₂ = 169.89 K

Hence required temperature is 169.89 K.

To know more about Charles law, visit the below link:

https://brainly.com/question/26725812