Was your average experimental mass percent of oxygen in potassium chlorate higher or lower than the theoretical value (circle one)?
Higher/Lower

Which of the following sources of error could be used to explain this discrepancy (circle one)?
a.The potassium chlorate sample was not heated strongly or long enough.
b.Some of the potassium chloride product splattered out of the crucible during the heating process.
Explain your choice. Your response should include an analysis of the calculations you performed with your raw data to obtain your experimental % of oxygen.

Average experimental mass percent of oxygen in potassium chlorate = 44%
The theoretical value = 39%​

Respuesta :

Answer:

Lower

a.The potassium chlorinate sample was not heated strongly or long enough.

From the information provided, the experimental mass percent of potassium chlorate is higher than the theoretical value. This may be because some of the potassium chloride product splattered out of the crucible during the heating process.

It is expected that the experimental mass percent in an experiment will be less than the theoretical mass percent thereby making the yield of the product to be less than 100%.

When the experimental yield is greater than the theoretical yield, there is definitely an error in the process. Since the mass percent is calculated based on the mass of KClO3 and KCl before and after the heating, an error could be introduced if  some of the potassium chloride product splattered out of the crucible during the heating process.

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