某混合烃和过量氧再一密闭容器中完全反应,测知反应前后的压强不变则该混合烃可能是A C2H4和C2H6 B C2H6和C3H6 C CH4和C2H4 D C2H2和C2H6

问题描述:

某混合烃和过量氧再一密闭容器中完全反应,测知反应前后的压强不变则该混合烃可能是
A C2H4和C2H6 B C2H6和C3H6 C CH4和C2H4 D C2H2和C2H6

(1)C.D!
(2)CxHy(g) + (x+y/4)O2(g) ==> xCO2(g) + y/2H2O(g)
(3)1 + (x + y/4)== x + y/2
(4)y == 4
(5)有可能每分子含4H合乎要求!