Suppose that the volatile impurities in the crucible are not burned off while cleaning the crucible but are removed during the experiment. Is the reported mass percent of water in the hydrated salt too high or too low?

Question

noelgreco · Answer

"Suppose that the volatile impurities in the crucible are not burned off while cleaning the crucible but are removed during the experiment."

That makes no sense.  This would:

Suppose that the volatile impurities in the crucible are not burned off during the experiment, but are removed during cleaning.

Is that it?

noelgreco · Answer

No, I've got it.  You start with a crucible dirty with volatile impurities.


OK

noelgreco · Answer

When you heat a hydrated substance in a crucible, what are you removing from the substance?

anonymous · Answer

We are burning a hydrate. So will the anhydrous salts mass be too high or too low
Because of the impurities that weren't cleaned in the initial weighing of the crucible