sulphur reacts with sodium hydroxide to form?
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Explanation:
Sulphur reacts with sodium hydroxide in different ways, depending on the reaction conditions.
At very high temperatures (600°C +), the reaction produces sodium sulphate, sodium sulphide and water vapour
4S + 8NaOH ⟶ Na2SO4 + 3Na2S + 4H2O
In boiling solution though (120°C),and with different stoichiometric quantities, sodium sulphite is produced rather than the sulphate
3S + 6NaOH ⟶ Na2SO3 + 2Na2S + 3H2O
Phosphorus reacts with NaOH to produce phosphine gas (toxic!) and sodium hypophosphite
3NaOH + 4P + 3H2O ⟶ PH3 + 3NaH2PO2
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The correct substitute is a sodium hydrogen sulphite.
- Sulfur dioxide reacts with sodium hydroxide solution to form sodium sulphite which further reacts with sulfur dioxide to form sodium hydrogen sulphite.
- Also known as a heptahydrate of sodium sulfite. But it is less effective due to greater susceptibility to oxidation by air.
- Sodium sulfite has reducing properties. Sodium sulfite is capable of exhibiting bleaching, desulphurizing and dechlorinating activity.
- This agent was used by some food industries to help maintain the freshness of food products.
- It is an ingredient used in many medicinal applications.
- It helps them maintain strength and stability.
- It is slightly toxic and dissolves slowly in water.
hydrogen sulphite.
2NaOH+SO2→Na2SO+H2ONa2SO3+H2O+SO2→2NaHSO3.
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