Question

Given the reaction 4NH3 +5O2 4NO+6H2O, what is the total number of moles of O2 required to produce 40 mol of NO?

(1) 5 mol
(2) 9 mol
(3) 32 mol
(4) 50 mol

Answer 1

The answer is choice 4 (50 moles). Let me know if you need an explanation

Answer 2

Answer : The correct option is, (4) 50 mole

Solution : Given,

Moles of NO = 40 mole

The given balanced chemical reaction is,

`4NH_3+5O_2\rightarrow 4NO+6H_2O`

As, 4 moles of NO produces from 5 moles of
`O_2`

So, 40 moles of NO produces from
`(5)/(4)* 40=50moles` of
`O_2`

Therefore, the total number of moles of
`O_2` is, 50 moles