Answer:
is the limiting reactant in the given reaction.
Step-by-step explanation:
Limiting reagent is defined as the chemical specie which gets totally consumed in the reaction and the formation of product is dependent on this reagent.
We are given:
Moles of
= 30 moles
Moles of
= 86 moles
The given chemical equation follows:

By Stoichiometry of the reaction:
If 10 moles of
reacts with 3 moles of

Then, 86 moles of
will react with =
of

As, given amount of
is more than the required amount. So, it is considered as an excess reagent.
Therefore,
is considered as a limiting reactant because it limits the formation of product.