The effect of concentration

1 mark · Normal

The reversible reaction is at equilibrium. What is the effect on the position of equilibrium if more N(g) is added?

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Correct option: Shifts to the left to form more M.

Common mistakes: Choosing shift to right; Choosing 'no change'

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Marking points

A1 · 1 mark · Correct option selected: 'Shifts to the left to form more M.'

Worked solution

Adding N(g) increases product concentration, so the system shifts to the left to use up the added N, making more M.