【简答题】A.The era during which the railroad was the dominant mode of transportation. B.The time during which mail was delivered by horse. C.The point at which airmail began to constitute the bulk of United St...
【简答题】在0.12MPa,898K等温下进行乙苯催化脱氢反应 C 6 H 5 —C 2 H 5 C 6 H 5 —CH===CH 2 +H 2 该反应的速率方程为 (a) 式中,p为分压;下标A,S及H分别代表乙苯、苯乙烯及氢。反应温度下, k=1.68×10 -10 kmol/(kg·s·Pa) K p =3.727×10 4 Pa 若在活塞流反应器中进行该反应,进料为乙苯与水蒸气的混合物,其物质的量比...