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In a reversible reaction. is it true that two substances are in equilibrium if the concentration of each increases by the same amount but the equilibrium constant remains unaffected?

Answer 1

Naomi Aronson

Yes, it is true that the equilibrium constant remains unaffected when you change any of the concentrations.

When a temperature is specified, a constant is the equilibrium constant.

Think about the balance

#"A ⇌ 2B"#

#K_"eq" = "[B]"^2/"[A]"#

If you change any of the concentrations, #K_"eq"# does not change.

Instead, the system adjusts itself so that the new values of of #"[A]"# and #"[B]"# create a new position of equilibrium that satisfies the value of the #K_"eq"# expression.

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Answer 2

Jeremiah Adams

Yes, in a reversible reaction, if the concentrations of both reactants and products increase by the same amount while the equilibrium constant remains unchanged, the system is in equilibrium.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.