Question

He following balanced equation shows the formation of water. 2H2 + O2 mc020-1.jpg 2H2O How many moles of oxygen (O2) are required to completely react with 27.4 mol of H2?

6.8 mol
13.7 mol
54.8 mol
109.6 mol

Answer 1

The answer is B 13.7

The other person was correct just took the test.

Answer 2

Answer : The correct option is, 13.7 mole

Solution : Given,

Moles of
`H_2` = 27.4 moles

The given balanced chemical reaction is,

`2H_2+O_2\rightarrow 2H_2O`

From the balanced chemical reaction, we conclude that

As, 2 moles of
`H_2` react with 1 moles of
`O_2`

So, 27.4 moles of
`H_2` react with
`(27.4)/(2)=13.7` moles of
`O_2`

Therefore, the number of moles of oxygen
`O_2` required are, 13.7 moles