For hydrogen gas Cₚ − Cᵥ = a and for oxygen gas Cₚ − Cᵥ = b, so the relation between a and b is:

Question

G1 Physics · Accepted Answer

Step 1: Mayer’s relation for the molar heat capacities of ANY ideal gas is Cₚ − Cᵥ = R. Step 2: Thus for hydrogen, a = R. Step 3: For oxygen, b = R also. Step 4: Hence a = b. Final answer: (D).