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I assume you mean the reaction between sulphuric acid and halide salts? Sulphur in H2SO4 has an oxidation state of +6 With Sodium Chloride (or any chloride salt): H2SO4 + 2NaCl → Na2SO4 + 2HCl This is a displacement reaction and nothing will be seen as sodium sulphate and hydrochloric acid remain in solution. With Sodium Bromide, the reaction is more vigorous and the S in H2SO4 is reduced. It becomes SO2. This is a colourless gas with a choking odour. Also HCl fumes may be given off because the reaction mixture is hot. With Sodium Iodide, more reduction happens. This is because Iodide is a strong reducing agent. SO2 becomes reduced to Suphur powder (yellow) and this can become further reduced to H2S which gives the smell of rotten eggs.
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What is the reduced sulfur test?
test for amino acids that contain the reduced sulfur group. (:
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What is the reduced sulfur test?
test for amino acids that contain the reduced sulfur group. (:
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