Question

find the limiting reagent and please give the correct explanation​

Answer 1

The limiting reagent is the quantity that is going to be completed before the other reactants, thereby limiting the product formation and reaction.

Here,

Given amount of A = 300 atoms

Given amount of B₂ = 200 molecules.

Hence, B is the limiting reagent.

Answer 2

Answer:

depends on the products formed

Explanation:

since the limiting reagent is the substance which is relatively low in quantity to proceed the reaction, we can find the substance A is the answer for this case.

becoz B2 splits up before the reaction to combine with A. then A has 300 atoms and B would be 400 atoms after splitting. obviously the extra 100 atoms of B cannot react with A which is already exhausted forming AB molecule. hence limiting reagent is A

A + B2 → AB + B

Note : if the reaction is of type ....

A + B2 → AB2....then....the lesser quantity B will be the limiting reagent.