Question

20 mL of a gaseous hydrocarbon was exploded with 120 mL of oxygen . A contraction of 60 mL was observed and a further contraction of 60 mL took place when KOH was added. What is the formula of the hydrocarbon?​

Answer 1

Answer:

gaseous hydrocarbon (12ml) is exploded with excess of oxygen. On cooling, the contraction in volume is 48ml and there is further contraction of 48ml in volume when passed through lime water. The molecular formula of hydrocarbon is

(1) C3H6

(2) C3H8

(3) C4H10

(4) C4H8

Homework help Donate

A)

The hydrocarbon is C4H8

n = 12

nx = 48

so x = 48/12 = 4