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Standard XII

Chemistry

Nucleophilic Substitution Reaction

In a reaction...

Question

In a reaction A+B2gives AB2, Identify the limiting reagent if 300 atoms of A reacts with 200 molecules of B2.

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Solution

Reaction is

A + B₂ → AB₂

here 1 mol of A reacts with 1 mol of B₂ to form 1 mol of AB₂.

Since 300 atoms of A is reacting with 200 molecules of B₂. Therefore A is in excess because it should react with 300 molecules of B₂.

So B₂ is a limiting reagent.

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Similar questions

Q. In a reaction

A + B_{2} \to {A B}_{2}

, identify the limiting reagent, if any, in the following reaction mixtures.
(i) 300 atoms of

A

+ 200 molecules of

B_{2}

(ii) 2 mol

A

+ 3 mol

B_{2}

(iii) 100 atoms of

A

+ 100 molecules of

B_{2}

(iv) 5 mol

A

+ 2.5 mol

B_{2}

(v) 2.5 mol

A

+ 5 mol

B_{2}

In a reaction

A + B_{2} \to {A B}_{2}

idetify the limiting reagent if any:

(a) 2 atoms of A reacts with 2 molecules of B.

(b) 2 moles of A reacts with 3 moles of B.

In a reaction

A + B₂ → AB₂

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

In a reaction A+B₂ ----------> AB₂

Identify the limmiting reagent if any in the following reaction mixtures.

1) 300 atoms of A+ 200 molecules of B

2) 2mol A+ 100 mol B

3) 100 atoms of A+ 100 molecules of B

4) 5 Mol of A+ 2.5 mol B

5) 2.5 mol A + 5 mol of B

Q. In a reaction

A_{2} + B \to A_{2} B

200

molecules of

A_{2}

is reacted with

300

atoms of

B

to complete the reaction, then the correct statement is:

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In a reaction A+B2gives AB2, Identify the limiting reagent if 300 atoms of A reacts with 200 molecules of B2.

Reaction is A + B2 → AB2 here 1 mol of A reacts with 1 mol of B2 to form 1 mol of AB2. Since 300 atoms of A is reacting with 200 molecules of B2. Therefore A is in excess because it should react with 300 molecules of B2. So B2 is a limiting reagent.

Reaction is

A + B₂ → AB₂

here 1 mol of A reacts with 1 mol of B₂ to form 1 mol of AB₂.

Since 300 atoms of A is reacting with 200 molecules of B₂. Therefore A is in excess because it should react with 300 molecules of B₂.

So B₂ is a limiting reagent.