Question

Chemistry Equillibrium help (picture)?

Answer 1

The correct answer is: D the yield decreases and the equilibrium constant decreases.

To answer this question, we can use Le Châtelier's Principle:

When you apply a stress to a system at equilibrium, it will respond in such a way as to relieve the stress.

The process is exothermic, so we can consider the heat as if it were a product of the reaction.

`"2H"_2"(g) + CO(g) ⇌ CH"_3"OH(l) + heat"`

If we increase the temperature, the position of equilibrium will shift in the direction that removes the heat: it will move to the left.

Thus, there will be fewer products and the yield of methanol will decrease.

`K_text(p) = 1/(p_text(H₂)p_text(CO)`

We have changed the temperature, and the amount of reactants increased.

`"p_text(reactants)` is in the denominator of the `K_text(p)` espression, so thevalue of `K_text(p)` must have decreased.

The correct answer is D the yield decreases and the equilibrium constant decreases.