The concentration of hydrogen radical is — Chemical Kinetics Chemistry Question

💡 Solution & Explanation

Setting d[H]/dt = 0 gives K2[Br][H2] - K3[H][Br2] - K4[H][HBr] = 0. Solving for [H] yields [H] = K2[Br][H2] / (K3[Br2] + K4[HBr]). Substituting [Br] = (K1/K5)^1/2 [Br2]^1/2 from the previous step gives the expression in option (c). Therefore, correct answer is C.