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Preparation of Carboxylic Acids

Six molecules...

Question

Six molecules each of $A_{2}$ (blue) and $B_{2}$ (red), as shown in the figure above, are allowed to react until all of the limiting reactant has been consumed. The balanced equation for the reaction is:
$2 A_{2} + B_{2} \to 2 A_{2} B$
Which of the following correctly identifies the limiting reactant and predicts the number of $A_{2} B$ molecules that will be produced?

A_{2}

is limiting;

4 A_{2} B

molecules will form.

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A_{2}

is limiting;

6 A_{2} B

molecules will form.

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B_{2}

is limiting;

4 A_{2} B

molecules will form.

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B_{2}

is limiting;

6 A_{2} B

molecules will form.

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Solution

The correct option is B $A_{2}$ is limiting; $6 A_{2} B$ molecules will form.
Here in the above reaction $A_{2}$ is limiting reagent $A_{2}$ is totally consumed when the chemical reaction is complete. The amount of product formed is limited by this reagent.Since the reaction can not continue without $A 2$

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Similar questions

Q. Consider the reaction illustrated above, given that the blues species represent molecules of

A_{2}

, while the red ones are molecules of

B_{2}, A_{2}

and

B_{2}

are diatomic elements.
Which of the following choices best represents the balanced equation for the reaction depicted?

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 + 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 + 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.

H_{2} + {C l}_{2} \to 2 H C l

2.02 g

H_{2}

and

35.45 g

{C l}_{2}

are allowed to react, what is the limiting reactant and what mass of

H C l

will be formed?

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The correct option is B A2 is limiting; 6A2B molecules will form.Here in the above reaction A2 is limiting reagent A2 is totally consumed when the chemical reaction is complete. The amount of product formed is limited by this reagent.Since the reaction can not continue without A2