The ratio of 𝐶𝑝/𝐶𝑣 for a diatomic gas is equal to ______?

1.67

1.4

1.5

1.6

For a diatomic gas (like O₂ or N₂), the ratio of specific heats 𝐶𝑝/𝐶𝑣 is approximately 1.4.

This ratio is also known as the adiabatic index (γ).

It is used in thermodynamic processes.