Question

How many moles of PCL5 can be produced from 22.0 g of P4 (and excess Cl2)?

Answer 1

1. Okay, so here is what the balanced equation will look like:

P4 + 10Cl2 ---> 4PCl5

The first thing you need to do to now is convert P4 to moles. The molar mass of P4 is approximately 123.895 g/mol; you divide 22.0 g by this value to get the number of moles of P4, .1776 moles*. According to the reaction, 4 moles of PCl5 are produced for every mole of P4 that reacts. Multiply the moles of P4 to get the answer, .710 moles.

Answer---> .710 moles PCl5

* It's a patriotic molecule

2. Again, the balanced reaction will provide the necessary tools to solve this problem:

P4 + 10Cl2 ---> 4PCl5

After converting, you get approximately .832 mol Cl2. For every 10 moles of Cl2 that react, 4 moles of PCl5 are produced. Multiplying the moles of Cl2 by 4/10 (i.e. 2/5) will give you the moles of PCl5 produced, .333 mol.

Answer---> .333 mol PCl5

Answer 2

Answer:

0.71 mol

here's the answer and hope this helps you.