What is the expected result for the bromide test with silver nitrate?

The correct result for the bromide test with silver nitrate is the formation of a cream precipitate of silver bromide. When silver nitrate (AgNO₃) is added to a solution containing bromide ions (Br⁻), a chemical reaction occurs, resulting in the formation of silver bromide (AgBr), which is insoluble in water. This precipitate appears cream in color.

The reaction can be summarized by the equation:

AgNO₃ (aq) + NaBr (aq) → AgBr (s) + NaNO₃ (aq)

Here, silver bromide precipitates out of solution as a solid, giving it the characteristic cream color that is indicative of bromide ions.

In contrast, other choices reflect the results from tests involving different halides or conditions. For instance, silver chloride (AgCl), which forms a white precipitate, is the result of testing chloride ions, while silver iodide (AgI) produces a yellow precipitate corresponding to iodide ions. A colorless solution would indicate the absence of precipitate, which does not occur in this reaction with bromide ions.