Question

For the exothermic reaction A (g) + 2 B (g) C (g), determine which of the following changes will cause the reaction to shift left.

Decrease A ,Increase A, Decrease B, Increase B, Decrease C, Increase C, Increase pressure, Increase volume, Increase temperature

Answer 1

A + 2 B = C

According to le chatelier's principle reaction adjust itself to maintain the equilibrium

So, left shift means towards the reactant

Decrease A

Decrease B

Increase C

On increasing the pressure reaction will shift towards less mole side ( product side )

Increase volume shift the reaction towards more moles of side i.e. reactant side.

As reaction is exothermic so it will shift left on increasing the temperature

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