Consider the following reaction: 10 KCIO3 + 3 P4 → 3 P4010 + 10 KCI
Given 30 moles of P4 and 86 moles of KCIO3, which would act as the limiting reactant?

is the limiting reactant in the given reaction.

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.

a. energy is absorbed in the reaction.

if in a given reaction the energy of products is greater than the energy of reactants it means that reaction is endothermic and during the reaction, the energy is absorbed by reactants. in an endothermic reaction, the products have more stored chemical energy than the reactants. and in this reaction the reactants are more stable than products before the compounds with less energy are always more stable.

o conteúdo de calor de um sistema é igual à entalpia apenas para um sistema que é constante