Question

Consider the balanced equation below

PCl3 + Cl2 --> PCl5
What is the mole ratio of PCl3 to PCl5?
1:1
2:1
3:5
5:3

Answer 1

PCl₃ + Cl₂ = PCl₅

1:1

Answer 2

The mole ratio of PCl3 to PCl5 is 1:1

Explanation

PCl3 + Cl2→ PCl5

Mole ratio - Is the ratio between amount of mole of two compound.

The mole ratio is determined by considering the coefficient in front of the formula in a balanced chemical equation.

The coefficient in front of PCl3 in equation above is 1 , while the coefficient in front of PCl5 is 1, therefore the mole ratio is 1:1