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Question
Give at least two tests to differentiate between the following gases.
SO2 and H2S
Distinguish Between
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Solution
| Test | SO2 | H2S |
|---|---|---|
| 1. Acidified potassium permanganate test | Decolours acidified KMnO4 solution. | No change; the purple colour remains. |
| 2. Lead acetate test | No change with lead acetate solution. | Turns moist lead acetate paper black due to formation of lead sulphide (PbS). |
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