Subjective Type

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

Solution

Manganese dioxide is a black metallic oxide which reacts with hydrochloric acid to give a coloured solution.

$$MnO_2+4HCl\to \underset{\text{Coloured solution}}{MnCl_2}+Cl_2+2H_2O$$

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 the experiment which demonstrates that hydrogen chloride is soluble in water.

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