Question

In the balanced chemical reaction for the combustion of propane, what is the molar ratio of O2 to CO2?

C3H8(g) + 5O2(g) ---> 3CO2(g) + 4H2O(g)

A. 3 to 5
B. 5 to 3
C. 1 to 1
D. 5 to 1

Answer 1

B. 5 to 3

Step-by-step explanation:

There's 5 O2 and 3 CO2

5:3 or 5 to 3

(It isn't A because of the order it was asked in. it always matters what you put first, so generally speaking,

"A to B" or "B to A" ratio wouldn't be the same.)