Subjective Type

Identify the gas evolved and give the chemical test in each of the following case : (i) Dilute hydrochloric acid reacts with sodium sulphite. (ii) Dilute hydrochloric acid reacts with iron (II) sulphide.

Solution

(i) Sulphur-di-oxide gas is evolved. Colourless, gas with smell of burning sulphur. It turns acidified potassium dichromate orange to green.
(ii) Hydrogen sulphide gas is evolved. Colourless gas with smell of rotten eggs. It turns lead acetate paper black.

SIMILAR QUESTIONS

p - block Elements

When iron filings are heated in a steam of dry hydrogen chloride, the compound formed is $$FeCl_{x}$$, where 'x' is :

p - block Elements

$$HCl$$ gas can fume in moist air.

p - block Elements

A and B are two gases. A is identified with the glass rod dipped in $$NH_3$$ and $$\mathrm{B}$$ is identified with the glass rod dipped in $$HCl$$. Then A and B are :

p - block Elements

The solution of $$BiCl_{3}$$ in dil. $$HCl$$ when diluted with water, white precipitate is formed which is:

p - block Elements

When three parts of conc. HCl and one part of conc. $$HNO_{3}$$ is mixed, a compound 'X' is formed. The correct option related to 'X' is:

p - block Elements

Write an equation for the reactions of aqueous hydrochloric acid on: zinc carbonate.

p - block Elements

Write an equation for the reactions of aqueous hydrochloric acid on: lead nitrate solution.

p - block Elements

Write an equation for the reactions of aqueous hydrochloric acid on: copper oxide.

p - block Elements

Hydrochloric acid contains (i) hydrogen (ii) chlorine. Prove it. Write equations for the reactions.

p - block Elements

Name black metallic oxide which reacts with hydrochloric acid to give a coloured solution.

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