In a reaction : A + B₂ → AB₂ Identify the ...

NCERT Class XI Chemistry Some Basic Concepts of Chemistry Solutions

Question : 23 of 36

Marks: +1, -0

In a reaction :

A + B_2

→

AB_2

Identify the limiting reagent, if any, in the following reaction mixtures.

(i) 300 atoms of A + 200 molecules of B

(ii) 2 mol A + 3 mol B

(iii) 100 atoms of A + 100 molecules of B

(iv) 5 mol A + 2.5 mol B

(v) 2.5 mol A + 5 mol B

Solution:

According to the equation, one mole of A reacts with one mole of B and one atom of A reacts with one molecule of B.

(i) B is limiting reagent because 200 molecules of B will react with 200 atoms of A and 100 atoms of A will be left in excess.

(ii) A

(iii) Both will react completely because it is stoichiometric mixture. No limiting reagent.

(iv) B

(v) A

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