Final answer:
c) Nessler reagent, The best method for detecting ammonia brine is using the which turns the solution brown-yellow in the presence of ammonia through the formation of a complex compound.
Step-by-step explanation:
The best way of detecting ammonia brine is by using Nessler reagent (Option C). This reagent is a classic method for qualitative and semi-quantitative detection of ammonia.
When Nessler reagent is added to a solution containing ammonia, it will form a complex that turns the solution brown-yellow if ammonia is present.
This color change is due to the formation of iodide of millon's base (a complex of iodine, mercury, and ammonia). Detecting other substances such as carbon dioxide or carbonate ions will not be effective in identifying ammonia specifically, as these detection methods pertain to different chemical reactions.
For instance, lime water can be used to test for the presence of carbon dioxide because it goes milky due to the formation of calcium carbonate.
A positive test for a carbonate involves production of carbon dioxide when the dry salt is treated with acid. However, these tests are not suitable for detecting ammonia brine directly.