# Organic Chem Lab

Assume your unknown ketone is 2-pentanone. What is the molar mass of your 2,4-dinitrophenylhydrazone product?

I don't need or even want the answer, I just need an explanation of how to start working the problem. Thanks!

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1. On a sheet of paper you write the formula for pentanone and 2,4Dnph, react them to form the "compound", then count the C, H, O, etc for the formula. Calculate the molar mass by looking up the atomic masses and summing them OR look on the web for a calculator to do that for you.

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posted by DrBob222

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