Question

Consider the balanced equation below

Answer 1

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

Answer 2

PCl₃ + Cl₂ = PCl₅

1:1