# How many moles of #PCL_5# can be produced from 22.0 g of #P_4# (and excess #Cl_2)#?

##### 1 Answer

Mar 13, 2017

#### Answer:

Approx.

#### Explanation:

We need (i) a stoichiometric equation to represent the reaction:

If you want you can multiply out the coefficients to give integral numbers:

I find the multiplication a bit easier to deal with if you use the former equation.

And we need (ii), equivalent quantities of each reactant:

Moles of

The chlorine gas oxidant is present in excess.

And thus, by the given stoichiometry with respect to phosphorus, we can make

This represents a mass of