Difference between Cv and Cp?

[Emil Velasco 1H]

Do they represent the same value or no?

I looked some stuff up and what I've seen has varied

[Leyna Dang 2H]

Cv is for constant volume and Cp is constant pressure. I don’t think they’re the same value.

[505316964]

Cv is heat capacity at constant volume and Cp is heat capacity at constant pressure.
For atoms that are ideal gases:
Cv: 3/2 R
Cp: 5/2 R

[RobertXu_2J]

Cv is for constant volume, Cp is for constant pressure. For MONOATOMIC atoms, Cv is 3/2R and Cp is 5/2R, but for diatomic ones, Cv is 5/2R and Cp is 7/2R

[Sydney Myers 4I]

The values differ because the heat capacity of a gas can be calculated with either a constant volume or a constant pressure. When it's calculated with a constant pressure, the gas can lose energy by doing work on whatever boundary is present, which makes the amount of energy to change its temperature slightly different because some of the energy supplied is used to do work instead of heat up the gas.

[Sidharth D 1E]

Also, for nonlinear molecules, Cv is 3R and Cp is 4R

[kevinolvera1j]

For ideal gases, Cp = Cv + R. The actual value of Cv will differ depending on whether it is monoatomic, linear (diatomic), and nonlinear.

[EvanWang]

Cv is the specific heat of a substance under constant pressure, while Cp is the specific heat of a substance under constant pressure. Generally, Cv is lower because a system at constant volume does no work, so all of the energy inputed into the system will be used toward increasing the temperature.

[Martina]

Cv is 3/2 R and is used under constant volume and Cp is 5/2 R and is used under constant pressure.