Answer : The mass of chlorine reacted with the phosphorus is, 53.25 grams.
Explanation :
First we have to calculate the moles of phosphorus.


Now we have to calculate the moles of

The balanced chemical reaction is:

From the balanced chemical reaction, we conclude that
As, 2 moles of phosphorous react with 3 moles of

So, 0.5 moles of phosphorous react with
moles of

Now we have to calculate the mass of


Molar mass of
= 71 g/mol

Therefore, the mass of chlorine reacted with the phosphorus is, 53.25 grams.