GKFix MCQ Question

For the reaction H₂(g) + I₂(g) ⇌ 2HI(g), what is true about the units of Kc and Kp?

• A. Kc has unit mol/L
• B. Kp has unit bar
• C. They are both unitless
• D. Kc is unitless, Kp has unit bar