First-order parallel: A -3K-> B; A -2K-> 2C; A -K-> 3D. Starting with 1M A. — Chemical Kinetics Chemistry Question

💡 Solution & Explanation

Total rate = 6K. [B]:[C]:[D] = 3K:4K:3K = 3:4:3 (constant, A correct). [C]>[B]=[D] at all times (B correct). [C]_inf = 4/6 = 2/3 = 0.67 M (C correct). (D: [B]=3/6*(1-e^-3*0.5*1.386) = 0.5*0.75 ≠ 1M; incorrect).