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Question

In the reaction,
4NH3+5O24NO+6H2O
when two moles of ammonia and three moles of oxygen are made to react completely, then:

A
1 mole of H2O is produced
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B
NH3 will be in excess
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C
2 moles of NO is formed
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D
Oxygen is completely consumed
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Solution

The correct option is C 2 moles of NO is formed
Finding limiting reagent:
Moles of ammonia = 2 mol
moles of ammoniastoichimetric coefficient=24=0.50

Moles of O2 = 3
O2stoichimetric coefficient=35=0.6

Hence, ammonia is the limiting reagent.
all of the ammonia will be consumed(i.e. 2 moles)

Theoretical yield of the reaction,
moles of ammonia4=moles of NO4
Hence, moles of NO formed will be 2.

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