Question

4g hydrogen reacts with 32g of oxygen to form 36g of water. what is the law related to this......​

Answer 1

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Asked on December 27, 2019 by

Nirupa Sudan

4g hydrogen reacts with 20g of oxygen to form water. The mass of water formed is:

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ANSWER

H

2

+

2

1

O

2

⟶H

2

O

Mass-4g20g

Moles-20.625

1 mole of H

2

requires 0.5 moles of O

2

.

∴ 1.25 moles of H

2

requires 0.625 moles of O

2

∴ O

2

is a limiting reagent.

0.5 mole O

2

⟶1 mole H

2

O

∴0.625 mole O

2

=

0.5

1×0.625

moles H

2

O.

=1.25 moles of H

2

O

Therefore, mass of H

2

O formed =1.25×18=22.5 gm

Answer 2

Answer:

tnq for free point mate