When copper sulphide is treated with hydrogen chloride, it gives off a foulsmelling gas H₂S.

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Solution

$\underset{Copper Sulphate}{{CuSO}_{4}} + \underset{h y d r o g e n C h l o r i d e}{2 H C l} \overset{}{\to} \underset{c o p p e r c h l o r i d e}{C u C l_{2}} + \underset{H y d r o g e n S u l p h i d e}{H_{2} S} + \underset{O x y g e n}{2 O_{2}}$
Whenever Copper sulphate reacts with hydrogen chloride it gives hydrogen sulphide gas a bi-product that smells very foul.

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Name the following:
(i) Acid present in the stomach of mammals.
(ii) Drying agent used to dry hydrogen chloride.
(iii) Salt obtained by heating sodium chloride with concentrated sulphuric acid below 200 degree celsius.
(iv) Gas that yields dense white fumes when mixed with hydrogen chloride.
(v) Two solution that yield white precipitates, when treated with hydrogen chloride or hydrochloric acid.
(vi) Gas obtained by treating metals with hydrochloric acid.
(vii) Gas obtained by treating ferrous sulphide with hydrochloric acid.
(viii) Five oxidizing agents that liberate chlorine from concentrated hydrochloric acid.
(ix) Acid used to extract glue from bones.
(x) A chloride which is soluble in excess of ammonium hydroxide.
(xi) A greenish yellow gas.
(xii) A chemical in which gold can be dissolved.
(xiii) A metallic oxide which reacts with hydrochloric acid to give a coloured solution.
(xiv) Two colourless gases which when mixed produce a white solid.

Translate the following statements into chemical equations and then balance them.

(a) Hydrogen gas combines with nitrogen to form ammonia.

(b) Hydrogen sulphide gas burns in air to give water and sulphur dioxide.

(d) Potassium metal reacts with water to give potassium hydroxide and hydrogen gas.

A. Fill in the blank spaces:

(i) When copper sulphide is treated with hydrochloric acid, it gives a ______ smelling gas hydrogen sulphide. [fine/foul]

When copper sulfide is treated with hydrochloric acid it gives off a gas _____ which has a foul smell

Q. Calcium sulphide yields the pure Hydrogen sulphide gas when treated with dilute:

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When copper sulphide is treated with hydrogen chloride, it gives off a foulsmelling gas H2S.

CuSO4CopperSulphate+2HClhydrogenChloride→CuCl2copperchloride+H2SHydrogenSulphide+2O2OxygenWhenever Copper sulphate reacts with hydrogen chloride it gives hydrogen sulphide gas a bi-product that smells very foul.

When copper sulphide is treated with hydrogen chloride, it gives off a foulsmelling gas H₂S.