copper sulfate core practical
name all of the key pieces of equiptment used in this practical
conical flask, beaker, measuring cylinder, glass rod, spatula, evaporating basin, filter, water bath, bunsen burner, watch glass
what is the first step in this practical?
place sulfuric acid in a conical flask and warm it in a water bath
why do you add copper oxide powder until it is excess?
to make sure all the acid is used up.
why do we have to make sure all the acid is used up?
if all the acid isnt used up it will be mixed with the soluble salt in solution
what do you do after you finish adding the copper oxide powder?
you filter the mixture to remove excess copper oxide
what should you do after filtering the mixture?
pour the filtrate into an evaporating basin
why do we heat the filtrate in an evaporating basin?
to evaporate half of the water
what is the last step of the copper sulfate practical?
pour the solution in a watch glass and leave it
why do we only evaporate half of the water using the bunson burner?
because we leave the rest to evaporate naturally in a watch glass
what is a precipitate?
an insoluble product of 2 soluble solutions when they are mixed and react together