CHM110H5 Study Guide - Midterm Guide: Silver Iodide, Cockroach
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A 6.537 g mixture ofKI and NaI was dissolved in water and reacted with excess
AgN03. All ofthe iodide precipitated as AgI. The mass of the AgI produced was
9.862 g. Calculate the
w/w composition of the original mixture.
Atomic masses (g/mol): Na=23.0, K=39.1, Ag=107.9, 1=126.9
3. (15) a.
+2:) -; ~
~ ~ 0, D420) -
(l0) b. The Chemical Insights in Chapters 3 and 4all deal with techniques of chemical
analysis that have been used for a range of practical applications from the
identification of cockroach species to the identification of the origin of a piece of
ivory. Briefly describe anyone of these analytical techniques.
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