Question

Phosphorus pentachloride is produced by the reaction b/w phosphine and chlorine gas.what mass of chlorine gas would be required to produced 0.015kg of phosphorus pentachloride

Answer 1

I solved the problem and I got 20.44g of chlorine gas

Answer 2

2PH3 + 8Cl2 ------> 2PCl5 + 6HCl

0.015kg of PCl5=15g of PCl5

15g of PCl5*(1 mole/208.24 g)=0.07203 moles of PCl5

The reaction shows that 2 moles of PCl5=8 moles of Cl2. So,

0.07203 moles of PCl5*(8 moles of Cl2/2 moles of PCl5)=0.28812 moles of Cl2,

0.28812 moles of Cl2*(70.906 g/moles)=20 g or 0.020kg of Cl2

Answer 3

i got 6.96g of chlorine gas

am i right?

Answer 4

I obtained 20.46 g Cl2. There are 2 significant figures in 0.15 kg so 20.46 rounded to 2 places is 20. g.

Answer 5

I don't still get the answer to the question. Please explain more.

Answer 6

You post your work and I'll find the error.

Answer 7

Anonymous is right on.Note that the coefficients are double what they should be (a boo boo I made when I first posted) but that doesn't change anything.

Answer 8

I have seen my mistake. Thanks.

Answer 9

If 10g of phosphorus is made to react with 15g of chlorine gas, calculate the percentage yield if 5.5g of phosphorus pentachloride was experimentally produced.

Answer 10

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