malachite lab
In this lab we decomposed copper (II) hydroxide carbonate into copper oxide and water.
We measured out a precise amount of the malachite and calculated the the amount of product we would obtain and calculated the % yield. Then we did the experiment. we started with scooping the malachite into a crucible, then we put the crucible on a hot plate, and we heated the malachite stirring it constantly until it turned from a green to a dark black. The we removed the copper oxide from the crucible and weighed it. The product weighed the same as what we predicted it would weigh. their was a 110% yield.
apparatus.
1 crucible.
1 glass stirring rod.
1 hot plate.
3 grams of malachite.
1 weigh scale.
1 lab scoop.
I need precise numbers so I can verify your results. I also need you to analyse your results - why do you think you obtained a higher yield than you expected?
ReplyDeleteDid you weigh the Malachite incorrectly?
Were your calculations wrong?
Did you manufacture more product some other way?
7/10