The name of the product formed in the reaction of sulphur and Oxygen is sulphur dioxide gas. When sulphur dioxide is dissolved in water, sulphurous acid is formed. The sulphurous acid turns blue litmus paper to red. Generally, oxides of non-metals are acidic in nature.
Questions maybe
(i) Which gas is formed when sulphur reacts with oxygen?
(ii) What is the nature of oxides of non-metals?

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Solution

Chemical reaction
A chemical equation represents a chemical reaction.
A chemical equation is the representation of a chemical reaction using symbols and formulae of the substances.
(i)
Reaction of sulfur with oxygen
The reaction is as follows:-
$S (s) + O_{2} (g) \to {SO}_{2} (g) Sulphur dioxide$
So, the formation of sulfur dioxide gas takes place when sulfur reacts with oxygen.
(ii)
Oxides of nonmetal
When non-metallic oxides mix with water, it forms an oxyacid.
The reaction is as follows:-
$H_{2} O (l) + {SO}_{2} (g) \to H_{2} {SO}_{3} (aq) sulphurous acid$
So, oxides of non-metals are acidic in nature.

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Similar questions

(a) Name the acid formed when sulphur dioxide dissolves in water.

(b) Name the gas released when sodium carbonate is added to a solution of sulphur dioxide.

Q. Indicate if the following statements are true or false.
(a) Oxides of non-metals dissolve in water to form some acids.
(b) Sulphites are salts formed from sulphuric acid.
(c) Phosphoric acid is tribasic.
(d) Nitric acid can only form normal salts.
(e) Hydrochloric acid can form both carbonates and bicarbonate.
(f) Carbonic acid can form both carbonates and bicarbonates.
(g) Water of crystallisation is found in anhydrous salts.
(h) Litmus turns red in the presence of alkalis.
(i) An acid reacts with a carbonate to form a salt, and hydrogen gas is obtained.
(j) Acid taste sweet.
(k) When the metal zinc reacts with hydrochloric acid, a salt called zinc chloride is formed.
(l) when metals react directly with acids, the reaction is called a displacement reaction.
(m) Sulphuric acid has the formula H₂SO₃.
(n) Carbon dioxide gas is given off as a result of displacement reactions between acids and metals.

Q. Rewrite the following by choosing the correct word from each pair in brackets.
Acids are compounds that contain (hydrogen/sulphur) atoms. Sulphuric acid is one such example. It is a (strong/weak) acid. It can be neutralised by (acids/alkalis) to form salts called (sulphites/sulphates).
Many (metals/non-metals) react with acids to give a gas called (hydrogen/oxygen). Acid also react with (carbonates/hydroxides) to give (hydrogen/carbon dioxide) gas.
Phenolphthalein turns (pink/colourless) in acids, while litmus turns (red/blue).

The name of the product formed in the reaction of sulphur and _____________ is sulphur dioxide gas. When sulphur dioxide is dissolved in_________________, sulphurous acid is formed. The sulphurous acid turns _____________ litmus paper to ____________. Generally oxides of __________ are acidic in nature. After completing the paragraph write two questions which you can raise on the basis of this information.

Q. Fill in the blanks to complete the following paragraph.

The name of the product formed in the reaction of sulphur and _____________ is sulphur dioxide gas. When sulphur dioxide is dissolved in____________,sulphurous acid is formed. Sulphurous acid turns_____________ litmus paper to ____________.Generally, oxides of __________ are acidic in nature.

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