posted by Sandy on .
A student dried a wet crucible with a Kimwipe. A piece of Kimwipe was left clinging to the inside wall of the crucible, The student did not see the piece of Kimwipe when adding the NaHCO3-KCl mixture to the crucible. The crucible ans its contents were weighed and subjected to three heating-cooling cycles (each time the temperature reached 600 Celsius). Could this experimental error significantly affect the calculated percentage of NaHCO3 in the mixture? Justify answer with an explanation.
Heated to what temperature? How big was the piece of Kimwipe? Is the NaHCO3 going to Na2CO3 or Na2O?