How much water is made using 2kg hydrogen and 16kg of oxygen?

Answer 1

This equation and finding the limiting reactant.

2H2 + O2 -> 2H2O

2 kg H2 (1000 g H/1 kg H)(1 mole H/2.016 grams)

= 992 moles hydrogen

16 kg O2 (1000 g/1 kg)(1 mole O2/32.0 grams)

= 500 moles oxygen

I suspect hydrogen limits. Let's see.

992 mole H2 (1 mole O2/2 mole H2)

= 496 moles O2

You have just a bit more than this in oxygen, so enough and hydrogen limits. ( check by going the other way and see the hydrogen limits )

So, hydrogen drives the reaction.

2 kg H2 (1000 g/1 kg)(1 mole H2/ 2.016 g)(2 mole H2O/2 mole H2)(18.016 g/1 mole H2O)(1 kg/1000 g)

= 17.87 kilograms water made

=========================( you do the significant figures )

Answer 2

When 2 kg of hydrogen react with 16 kg of oxygen, they will form 18 kg of water. This is because the ratio of hydrogen to oxygen to water is 2:1:2 in terms of moles.

Answer 3

180 g