KCET · Chemistry · Practical Chemistry
In which of the following, \(\mathrm{NH}_{3}\) is not used?
- A Tollen's reagent
- B Nessler's reagent
- C Group reagent for the analysis of IV group basic radicals
- D Group reagent for the analysis of III group basic radicals
Answer & Solution
Correct Answer
(B) Nessler's reagent
Step-by-step Solution
Detailed explanation
Potassium tetraiodo mercurate (II) ie, \(\mathrm{K}_{2}\left[\mathrm{HgI}_{4}\right]\) dissolves in \(\mathrm{KOH}\) solution to give Nessler's reagent. Nessler's reagent is used to test \(\mathrm{NH}_{4}^{+}\)ions.
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