For a hypothetical reaction of the kind AB 2 g -1-2 B 2 g - AB 3 g - - H - xkJMore AB 3 could be produced at equilibrium by-A- Using a catalystB- Removing some of B 2C- Increasing the temperatureD- Increasing the pressure

The correct option is D Increasing the pressureWe are given an exothermic reaction, AB_2(g)+1/2B_2(g)⇌ AB_3(g) a) Using a catalyst will have no impact on the ...

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Standard XII

Chemistry

Le Chatelier's Principle for Del N Lesser Than Zero

For a hypothe...

Question

For a hypothetical reaction of the kind
$A B_{2} (g) + \frac{1}{2} B_{2} (g) ⇌ A B_{3} (g); Δ H = - x k J$
More $A B_{3}$ could be produced at equilibrium by:

Using a catalyst

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Removing some of

B_{2}

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Increasing the temperature

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Increasing the pressure

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Solution

The correct option is D Increasing the pressure
We are given an exothermic reaction,
$A B_{2} (g) + \frac{1}{2} B_{2} (g) ⇌ A B_{3} (g)$

a) Using a catalyst will have no impact on the equilibrium, so cannot increase the amount of $A B_{3}$ using a catalyst.

b) If we remove $B_{2}$ , according to Le Chatelier’s principle the reaction will move in the backward direction, so $A B_{3}$ will further decrease.

c) Since the reaction is exothermic, increasing the temperature will decrease the amount of $A B_{3}$ again.

d) But the number of the gaseous molecules is in the products is lower than the reactants. Increasing the pressure will shift the equilibrium towards the forward reaction and thus will increase the amount of $A B_{3}$ .

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For a hypothetical reaction of the kind
$A B_{2} (g) + \frac{1}{2} B_{2} (g) ⇌ A B_{3} (g); Δ H = - x k J$
More $A B_{3}$ could be produced at equilibrium by: