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Homework Help: [Chemistry]Composition of elements in empirical formula

  1. Feb 15, 2013 #1
    1. The problem statement, all variables and given/known data
    0.2243 g of compound C give 0.3771 g of carbon dioxide, 0.0643 g of water and 0.2685 g of silver bromide. Determine the empirical formula of the compound.

    2. Relevant equations
    Why the empirical formula only takes C,H and Br into consideration, but singles out Ag?
    Ans: C6H5Br

    3. The attempt at a solution
  2. jcsd
  3. Feb 16, 2013 #2


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    Science Advisor
    Homework Helper
    Gold Member

    It must be because they assume you know that silver nitrate is used to determine halogens. They also assume the you have no oxygen in the compound and that oxygen is used in excess as a reagent in the C and H determination.
  4. Feb 17, 2013 #3

    I see your point, thanks chemisttree
    Once more question,
    Will Ag be included into empirical formula at times?

    In other words,
    is there any restrictions in composition elements of the empirical formula?

  5. Feb 19, 2013 #4


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    Staff: Mentor

    Generally speaking - no.
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