HCI(g) can be synthesized from H₂(g) and Cl₂(g) as

Last updated: 7/9/2022

HCI(g) can be synthesized from H₂(g) and Cl₂(g) as represented above. A student studying the kinetics of the reaction proposes the following mechanism Step 1: Cl₂(g) →→2 Cl(g) AH = 242 kJ/molrxn Step 2: H₂(g) + Cl(g) → HCI(g) + H(g) Step 3: H(g) + Cl(g) → HCI(g) AH = 4 kJ/molrxn AH = -432 kJ/molrxn A B What is the value of the enthalpy change per mole of HCI(g) produced? -93 kJ -121 kJ -186 kJ (slow) (fast) -242 kJ H2(g) + Cl2(g) = 2 HCl(g) Kp = 2 × 1030 at 298 K (fast)