How many grams of PCl3will be produced by reacting 94.4 g of Cl2 with excess phosphorus if the reaction is only expected to deliver 82.50 % yield? I know that the PCl3 molar mass is 137.33 g.mol and Cl2 molar mass is 70.906. I just don't know where to start with this problem.

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How many grams of PCl3will be produced by reacting 94.4 g of Cl2 with excess phosphorus if the reaction is only expected to deliver 82.50 % yield?

I know that the PCl3 molar mass is 137.33 g.mol and Cl2 molar mass is 70.906. I just don't know where to start with this problem.

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Step 1

Phosphorus reacts with chlorine to form phosphorus trichloride. The equation for the balanced chemical reaction is as follows:

2P + 3Cl2  2PCl3

The mass of chlorine is = 94.4 g

The molar mass of PCl3 is = 137.33 g.mol

Mass of two moles of PCl3 is = 274.66 g

The molar mass of Cl2 is = 70.906 g/mol

The mass of three moles of chlorine is = 212.718 g

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