Question

2H2 + O2 mc002-1.jpg 2H2O The number of moles of hydrogen that is needed to produce 0.253 mol of water is

Answer 1

Mol --> Mol is a one step, XMol H2 = .253mol H20 x 2/2 = .253 mol H2

Answer 2

Answer : The number of moles of hydrogen gas needed are, 0.253 mole

Explanation : Given,

Moles of water = 0.253 mole

Now we have to calculate the moles of hydrogen gas.

The given balanced chemical reaction is,

`2H_2+O_2\rightarrow 2H_2O`

From the balanced reaction we conclude that,

As, 2 moles of water obtained from 2 moles of hydrogen gas

So, 0.253 moles of water obtained from
`(2)/(2)* 0.253=0.253mole` of hydrogen gas

Therefore, the number of moles of hydrogen gas needed are, 0.253 mole