Class 11 Exam > Class 11 Videos > Chemical Tests for Sulphite
Chemical Tests for Sulphite Video Lecture - Class 11
FAQs on Chemical Tests for Sulphite Video Lecture - Class 11
| 1. What are some chemical tests for sulphite? |  |
Ans. Some common chemical tests for sulphite include the methylene blue test, the barium chloride test, the hydrogen peroxide test, the lead acetate test, and the iodine test. These tests are used to detect the presence of sulphite ions in a solution.
| 2. How does the methylene blue test work to detect sulphite? | |
Ans. The methylene blue test works by oxidizing sulphite ions to sulphate ions. Methylene blue is a blue dye that turns colorless when it reacts with sulphite ions. By observing the color change, we can determine the presence or absence of sulphite in a sample.
| 3. Can the barium chloride test be used to quantify the amount of sulphite in a sample? | |
Ans. Yes, the barium chloride test can be used to quantify the amount of sulphite in a sample. When barium chloride is added to a solution containing sulphite ions, a white precipitate of barium sulphite is formed. The amount of precipitate formed can be used to determine the concentration of sulphite in the sample.
| 4. Is the hydrogen peroxide test specific to sulphite ions? | |
Ans. No, the hydrogen peroxide test is not specific to sulphite ions. It is a general test for the presence of reducing agents. However, sulphite ions are known to be strong reducing agents, so they will react with hydrogen peroxide to produce oxygen gas. This reaction can be used as an indication of the presence of sulphite in a sample.
| 5. What is the principle behind the iodine test for sulphite? | |
Ans. The iodine test for sulphite is based on the reaction between sulphite ions and iodine. In the presence of sulphite ions, iodine is reduced to iodide ions, resulting in a color change from brown to colorless. This color change can be used to detect the presence of sulphite in a sample.
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Chemical Tests for Sulphite for Class 112025 is part of Class 11 preparation. The notes and questions for Chemical Tests for Sulphite
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