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Chapter 15: Problem 4

Write short notes on the following: (a) Peroxides (b) Amphoteric oxides (c) Dithionic acid (d) Frasch Process (e) Allotropes of sulphur

Short Answer

Expert verified
Peroxides are compounds with an -O-O- bond, mostly known is hydrogen peroxide. Amphoteric oxides can act as either acid or base, reacting with both to form salt and water. Dithionic acid (H2S2O6) is a sulfur oxyacid, made using concentrated alkali metal sulfite solution partially oxidised. Frasch Process extracts sulfur from underground with hot water and compressed air. Allotropes of sulphur include rhombic and monoclinic forms, with the rhombic being more stable.

Step by step solution

01

Peroxides

Peroxides are a group of compounds with an oxygen-oxygen single bond, or -O-O-. The most common peroxide is hydrogen peroxide, known for its use as an antiseptic. It's important to note that peroxides can be hazardous due to their ability to form free radicals.
02

Amphoteric oxides

Amphoteric oxides are oxides that can act as either acid or base in a reaction, depending on the other substance involved. This means they can react with both acids and bases to form salt and water. Examples include aluminum oxide (Al2O3), zinc oxide (ZnO), and tin oxide (SnO).
03

Dithionic acid

Dithionic acid is an oxyacid of sulfur, with the chemical formula H2S2O6. Anhydrated dithionate salts can be made using a concentrated solution of an alkali metal sulfite, which is then partially oxidised.
04

Frasch Process

The Frasch Process is a method used to extract sulfur from underground deposits. It is based on the principle of melting sulfur with hot water and then forcing the melted sulfur to the surface using compressed air.
05

Allotropes of sulphur

Allotropes are different structural forms of the same element in the same physical state. The most common allotropes of sulphur include rhombic and monoclinic sulphur. Rhombic sulphur is the more stable form.

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Most popular questions from this chapter

Give reasons for the following. (a) \(\mathrm{SF}_{6}\) is known but \(\mathrm{OF}_{6}\) is not known. (b) \(\mathrm{H}_{2} \mathrm{~S}\) is more volatile than \(\mathrm{H}_{2} \mathrm{O}\). (c) Oxygen exists as \(\mathrm{O}_{2}\) but sulphur exists as \(\mathrm{S}_{8}\) (d) \(\mathrm{H}_{6} \mathrm{TeO}_{4}\) is known but the corresponding acids for the other Group 16 elements are not known.

Discus the method of extraction of sulphur in brief.

Discuss the anomalous behaviour of oxygen.

Discuss the structures of the oxoacids of sulphur.

Discuss the methods for the preparation of sulphuric acid and give its properties.
See all solutions

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