[Chemistry]Composition of elements in empirical formula

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The discussion revolves around determining the empirical formula of a compound based on given masses of carbon dioxide, water, and silver bromide. The empirical formula C6H5Br is derived by focusing on carbon, hydrogen, and bromine while excluding silver. This exclusion is due to the assumption that silver nitrate is used to identify halogens and that oxygen is not present in the compound. Participants clarify that there are generally no restrictions on the elements included in an empirical formula, although specific cases may vary. The conversation emphasizes the importance of understanding the assumptions made during the calculation process.
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Homework Statement


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.

Homework Equations


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

The Attempt at a Solution

 
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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.
 
chemisttree said:
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.


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?

Thanks.
 
chomool said:
is there any restrictions in composition elements of the empirical formula?

Generally speaking - no.
 

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