textbook problem M.22

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Emily Mei 1B
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Joined: Fri Sep 29, 2017 7:04 am

textbook problem M.22

Postby Emily Mei 1B » Sun Nov 05, 2017 8:48 pm

In the 9/4 Fundamentals review session, we went over problem M.22 from the textbook, which reads: A compound produced as a by-product in an industrial synthesis of polymers was found to contain carbon, hydrogen, and iodine. A combustion analysis of 1.70 g of the compound produced 1.32 g of CO2 and 0.631 g of H2O. The mass percentage of iodine in the compound was determined by converting the iodine in a 0.850-g sample of the compound into 1.15 g of lead(II) iodide. What is the empirical formula of the compound? Could the compound also contain oxygen? Explain your answer.

We went through the steps but I don't understand how to answer the 2nd question (could the compound also contain oxygen?). Does anyone know how to do this?

Emilie Hoffman 1E
Posts: 55
Joined: Fri Sep 29, 2017 7:04 am

Re: textbook problem M.22

Postby Emilie Hoffman 1E » Sun Nov 05, 2017 9:17 pm

In this problem we are assuming that we do not know a lot about the original reaction that took place and that oxygen could conceivably be a factor in this reaction if the mass percentage composition you calculate and the one supplied don't match up. So maybe they're asking if oxygen could have initially been one of the components in the reaction.


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