A solution of hydrogen chloride in water is prepared. The following substances are added to separate portions of the solution :

Substance added Gas evolved Odour

Calcium carbonate

Magnesium ribbon

Manganese (iv) oxide with heating

Sodium sulphide

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Solution

Substance added Gas evolved Odour

Calcium carbonate Carbon dioxide Odourless

Magnesium ribbon Hydrogen Odourless

Manganese (iv) oxide with heating $C l_{2}$ Strong pungent odour

Sodium sulphide Hydrogen sulphide Rotten egg

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Similar questions

S.No.	Substances added	Gas evolved	Odour
1. 2. 3. 4.	Calcium carbonate Magnesium ribbon Manganese (IV) oxide with heating Sodium sulphide	___ ___ ___ ___	___ ___ ___ ___

S. No.	Substance added	Gas evolved	Odour
1. 2. 3. 4.	calcium carbonate magnesium ribbon manganese (IV) oxide with heating sodium sulphide	__ __ __ __	__ __ __ __

Give the odour of the gas evolved and name the gas produced when sodium sulphide is added to a solution of HCI in water.

Question 33
Write a balanced chemical equation for each of the following reactions and also classify them.

(a) Lead acetate solution is treated with dilute hydrochloric acid to form lead chloride and acetic acid solution.

(b) A piece of sodium metal is added to absolute ethanol to form sodium ethoxide and hydrogen gas.

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