Question

I hate asking questions in Chem because nobody ever answer them. But here it goes anyway:



Equilibrium is established in a reversible reaction when?

the [product] = [reactants]
the rate of reaction of the products = the rate of reaction of the reactants
all the reactants dissolve or dissociate
when products are no longer produced

Answer 1

@e.mccormick Chem help :D

Answer 2

@thomaster ?

Answer 3

B?

Answer 4

the rate of reaction of the products = the rate of reaction of the reactants

Answer 5

Yes, it would be B. You can think of equilibrium like a library loaning out books. If the number of people taking out a book each day is equal to the number of people returning them, then there's no issue, as when a person comes in to pick up a book someone will be returning it, and everyone's happy.

It's not A, as if it starts out at say, 5 books in and 5 books out, but then 1000 people all come in wanting those books, it very soon becomes unequal.

D Isn't right, as if books aren't being loaned out, then there's no equilibrium established.

C isn't really even relevant.

Answer 6

When the ratio of concentrations of the reactants and products is stable. so its the first one the [product] = [reactants]

Answer 7

The concentrations of the reactants and products need not be equal. Either side could be heavily favored, and this is why we have equilibrium constants -- not all equilibrium constants are equal to 1 ([products] = [reactants]). The only condition is that reactants are being produced just as quickly as products, because the net change in each concentration becomes 0.

Answer 8

Wow thanks everyone!