If K > 1 at 25°C and 1 atm of pressure, then which statement is true about the reaction's equilibrium?

Question

A. There is always more reactant than product at equilibrium under all conditions.
B. There is more product than reactant at equilibrium at these conditions.
C. There is always more product than reactant at equilibrium under all conditions.
D. There is more reactant than product at equilibrium at these conditions

I have no idea how to answer this. Someone please help me out.

Answer 1

Here is a hint. In a general reaction we have
reactants ----> products. At equilibrium we have
K = (products)/(reactants)
So when K = 1, we know numerator/denominator = 1 which means products = reactants. That's the only way it can be 1.
When K < 1 we know the numerator is less than the denominator.
When K > 1 we know the numerator is greater than the denominator.
So if K > 1 we know the top number stuff is more than the bottom number stuff. Right?

Answer 2

Wait but I'm not sure how to differentiate between B and C. Can there ALWAYS be more product?

Answer 3

That's right. We know that K is a constant. It doesn't change EXCEPT for two things. If the temperature changes then K changes. It may become larger or smaller. For gaseous reactions, if pressure changes K will change if the number of moles of gas is not the same on both sides. So under all conditions to me would mean ANY temperature and ANY pressure so I wouldn't pick that one. Right?

Answer 4

So the answer should be B

Answer 5

yes