Chem Q Bank #23

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Joined: Wed Jan 04, 2017 10:03 pm

Chem Q Bank #23

Post by Happymadness » Sun Jan 08, 2017 5:54 pm


Could I get an explanation for the attached problem? I don't really understand how the concentration would be 1/n.
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Re: Chem Q Bank #23

Post by NS_Tutor_Raven » Mon Jan 09, 2017 10:31 am

Hey Happymadness,

So let's look at this equation and try to simplify it a little bit:

n CDP <--> (polymer) + n HPO4 ^-2

The question wants to know what the concentration of the polymer will be in respect to the amount of HPO4 ^-2. The key to this is to understand that there will always be just a single polymer that keeps just keeps getting longer as more hydrogen phosphates are made. So if we just divide the concentration of hydrogen phosphate by the number of hydrogen phosphate and you will get the concentration of the polymer. Let me know if that still seems unclear!
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