Problem: A mixture of 21.2 g of P and 79.2 g of Cl2 reacts completely to form PCl3 and PCl5 as the only products.Find the mass of PCl3 that forms.

FREE Expert Solution

We’re being asked to calculate the mass of PCl3 that will be formed in the reaction. 


For this problem, we need to do the following steps:

Step 1: Write and balance a chemical equation for the given reaction.

Step 2: Determine the limiting reactant and calculate the mass of PCl3 formed.



Step 1: From the problem, the given chemical reaction is:

P + Cl2 → PCl3 + PCl5


This equation is not yet balanced. To balance it, we have to make sure that the number of elements on both sides is equal.

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Problem Details

A mixture of 21.2 g of P and 79.2 g of Cl2 reacts completely to form PCl3 and PCl5 as the only products.

Find the mass of PCl3 that forms.

Frequently Asked Questions

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Limiting Reagent concept. You can view video lessons to learn Limiting Reagent. Or if you need more Limiting Reagent practice, you can also practice Limiting Reagent practice problems.

What professor is this problem relevant for?

Based on our data, we think this problem is relevant for Professor Goyan's class at SFU.