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Science-Related Homework Help Chemistry Topic started by: tom on Aug 22, 2012



Title: Can you help me with this AP Chemistry Question?
Post by: tom on Aug 22, 2012
Suppose your labratory instructor inadvertantly gave you a sample of KHP that was contaminated with NaCl to standardizr you NaOH. How would this affect the normality you calculated for your NaOH solution? Justify your answer.


Title: Can you help me with this AP Chemistry Question?
Post by: obpopnurse on Aug 22, 2012
For this application, sodium chloride would be classified as an inert contaminant.

The actual amount of KHP, though, which you have would be less than the amount you weighed out. Thus, you would need less NaOH to neutralize it, and the calculated molarity of your NaOH would be lower.