Q=K

[briannam_1F]

I'm confused has to why Q=K when Q is supposed to representative of a system that has not yet reached equilibrium?

[lilymayek_1E]

Q is representative of a chemical system's direction towards products/reactants at any given moment; so it can represent a system out of equilibrium or possibly a system in equilibrium at a very specific moment. Q can equal K in a given moment in time during a chemical reaction; it simply means that in that specific moment during the reaction, Q=K and the reaction favors neither reactants or products and is in an equilibria state.

[christabellej 1F]

Q can be calculated at any point during the reaction, whether the reaction is at equilibrium or not. As such, the value of Q could indicate that a reaction is not yet at equilibrium (such as Q<K or Q>K) or that it is at equilibrium (Q=K).

[Aarushi Solanki 4F]

K is the equilibrium constant, and a reaction naturally shifts with the goal of reaching equilibrium. So, although Q is representative of the actual system, the ideal state is Q=K.

[Keerthana Sivathasan 2E]

Q can only be equal to K when the reaction is at equilibrium. Q is just used to check to see if a reaction is at equilibrium if you are unsure. If Q is less than K, that means there is more reactants than products, so the reaction is still going to the right, while if Q is more than K, that means there is more products than reactants, and so the reaction should be proceeding to the left.

[Sam McNeill 1E]

Q is calculated the exact same way as K, it is simply just used to determine if more products or more reactants need to be made in order to reach equilibrium.

[805097738]

Q doesn't have to be strictly not at equilibrium. It can be at any point in the reaction including equilibrium, K.

[105335337]

Q is just the system quotient at any time. If q ends up equaling K that means that the reaction is at equilibrium. If K>Q the forward reaction is favored & if K<Q then the backwards reaction is favored.

[pmokh14B]

When Q equals K the system is at equilibrium. In all other situations, it is not.

[Kallista McCarty 1C]

When Q=K the reaction is at equilibrium. When Q<K the forward reaction is favored and when Q>K the reverse reaction is favored.

[sarahsalama2E]

Q is calculated the same way as k. If Q is less than K than the reaction proceeds forwards and vice versa if its the opposite.

[vanessas0123]

Q can be calculated at any point during the reaction, including the equilibrium point. Thus, if Q = K, that means that the reaction is at equilibrium.

[BCaballero_4F]

Q can be calculated at any given moment, not only when the system is not at equilibrium, so Q=K is when Q is calculated when it is at equilibrium.

[Jasmine Vallarta 2L]

If you're unsure whether a rxn has reached equilibrium, you have to use Q. If you know the K value and it matches Q, then you know that the rxn has reached equilibrium

[Nathan Nakaguchi 1G]

Q can be calculated at any time (including when it has already reached equilibrium) during the reaction and is compared to K to see the direction of the reaction, if Q equals K then that just means the reaction is at equilibrium.