Question

400K,101.3kPa时,1.5L某烃的蒸汽能在aL氧气中完全燃烧,体积增大到（a+3）L（气体体积均在相同状况下）

Answer 1

CxHy + (x+y/4)O2 ---> xCO2 + y/2H2O

1.5 :1 = 1.5 :(y/4-1)

y = 8

(x+y/4) :1 < 10 :1.5 = 6.67

x < 4.67：C3H8,C4H8.

a > 9*1.5 = 13.5 L ；a > 13.5 L.