Question

For the reaction

C₂H₂(g)+30₂(g) → 2CO₂(g) +2H₂O(g)
if 5.0 mol of CO₂ are produced, how many moles of O₂ were reacted?
(A) 12.5 mol
(B) 3.3 mol
C)7.5 mol
D)none of these
(E) 6.2 mol

I think it’s C

Answer 1

Answer: C

Explanation: 3 mol O2 ⇒ 2 mol CO2

O2 reacts to produce 5 mol of CO2 = (3 * 5)/2 = 7.5 mol O2