Question

what is precipitate ?
a.a reactant in a precipitation reaction
b.a reaction that failed to react
c.A compound that doesn't dissolve in water
d.Rain ?

Answer 1

A precipitate is the product of a reaction that doesn't dissolve in water. I don't like the choices here, but I guess (c) seems most appropriate by process of elimination.

Answer 2

I agree none of these choices are really right but I would choose C if I had to choose one.

Why others are wrong:

a. A Precipitate forms after the reaction so I would consider it a product (alot of times if a product is a solid or precipitate, it is omitted from the reaction formula.)

b. A precipitate is the result of a reaction that took place, not failed.

d. Rain = precipitation but obviously not the right choice.

Answer 3

precisely my reasoning too.