Question

consider the chemical reaction in equilibrium.
aa(aq) + bb(aq) ⇌ cc(aq) + dd(aq)
according to le chatelier’s principle, which statement correctly completes the table below?

change	effect on equilibrium constant (k)
increase in temperature	value of k also changes
increase in pressure	?

options:

• value of k does not change
• value of k increases
• value of k decreases
• value of k oscillates

Explanation:

The equilibrium constant \( K \) depends only on temperature. Changes in concentration (like increasing product concentration) or pressure (for reactions with aqueous or no gaseous species, or equal moles of gaseous reactants and products) do not alter \( K \). Since the reaction here is in aqueous solution (all species are \( (aq) \)), increasing pressure (which affects gaseous systems more, but here no gases) won't change \( K \), only temperature does. So for an increase in pressure, \( K \) remains unchanged.

Answer:

value of \( K \) does not change