Single Choice

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:

AX' is known as aqua-regia
BX' is used for dissolving gold
CX' is used for decomposition of salts of weaker acids
Dboth (a) and (b)
Correct Answer

Solution

Aqua regia is also called as royal water is a mixture of nitric acid and hydrochloric acid in the molar ratio of 1:3. Aqua regia is a yellow-orange fuming liquid.Aqua regia is used for the decomposition of weak acids. Hene option D is correct.

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

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.

p - block Elements

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

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