Tamilnadu BoardEnglish MediumSTD 12ChemistrySurface Chemistry2 Marks
Question
Explain the application of adsorption ¡n qualitative analysis with an example.
✓
Answer
1. In the identification of $Al ^{3+}$ ion in $Al ( OH )_3$ is obtained as blue lake. Due to adsorption of blue litmus solution added to the aluminium ion solution.2. A red colouration is seen due to the acidic nature of the solution. Ammonium hydroxide is added to it until the bkie colour develops.3. During this addition, $Al ( OH )_3$ precipitate is formed with blue colour due to the adsorption of litmus compound.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.