Reactants and products?

Question

Are both the reactants and products present in a dynamic equilibrium?

True of False

2) some reactions form so many products that the reaction is said to go to completion.

3) Cu(NH3)4 2+ is called a complex ion and it has an intense color

4) A slightly ionizable substance forms lots and lots od ions

5) chemist use the Keq to redict if the reaction will form lots of products or just a few products.

6) Le Chatelier's principal can be used to make a reaction occur even of the reaction would normally not occur.

thank you soooooo MUCH

Answer 1

Yes.  In order to have an equilibrium, the reactants and products must both be present, even if it doesn't show up in the equilibrium expression.

AgCl(s) <==> Ag+ + Cl-

Ksp = [Ag+] [Cl-]

But solid silver chloride must be present in order to have an equilibrium.

2)  Not "so many products", but "so much product".  There may be only one prouduct, but a lot of it.  This is true.

3) True.  It's deep purple.

4) False.  This one is pretty obvious.

5) True.  Using Keq, you can predict the position of an equilibrium.

For instance, bubbling NH3 into water will produce mostly wet ammonia since the Keq for this equilibrium is small (favors the reactants).

NH3 + HOH <==> NH4+ + OH-

6) True.  Le Chatelier's principle is a concept, but the application of the concept to the actual chemistry allows us to make adjustments to a system to force a reaction to go to a much greater extent.

NH3 + HOH <==> NH4+ + OH-

Suppose OH- was removed from the solution.  The reaction would continue to the right, until all of the NH3 was used up, which of course, would not have been the situation had no OH- been removed.