In chemistry, we did a lab in which we had a certain mass of copper, performed multiple experiments on the copper, and at the en
d, extracted the copper from a solution and weighed it. The goal was that the mass of the final copper should be the same as the mass of the initial copper. During the final step, the copper pieces are put in an evaporating dish and placed over boiling water in a beaker (on a hot plate) so that the copper will dry, the excess water will evaporate, and all that will be left is the mass of the copper. Here is the question:
What is the maximum temperature to which the evaporating dish containing copper will be heated in Part G? How is this known?
I really don't know the answer to this question or how to find out, as we did not take the temperature of anything during the experiment. The only thing I can think of is that water boils at 100 degrees Celsius so the temperature of the steam (the heat of which evaporates the water) must be around then, so that must also be the max temp of the evaporating dish..
Or I was also thinking that we know that max temp of the evaporating dish must be lower than the melting point of copper because the copper is dried but not overheated.
The question is a a bit confusing but since the melting point of copper is about 1000 Celsius we don't want to go that high so i think as long as we stay with 100 Celsius so all the water evaporates we are good
