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Question
Distinguish by dilute sulphuric acid.
Sodium Sulphite and sodium carbonate?
Solution
| Sodium Sulphite | Sodium carbonate |
| Sodium sulphite is the sodium salt of sulphurous acid having molecular formula Na2SO3, can be made by dissolving NaOH in H2SO3. In Sodium sulphite, the oxidation state of Sulphur is +4. | Sodium carbonate (Na2CO3) will effervesce when dilute acid is added and a colourless, odourless gas (carbon dioxide) will be given off which, if bubbled through lime-water, will turn it cloudy. |
|
Gas evolved is SO2. |
The gas evolved is carbon dioxide. |
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