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Question

Fill in the blanks:
(i) Aqua-regia is a mixture of _________.
(ii) A constant boiling mixture of water and hydrochloric acid is also called as _________.
(iii) ________ agent converts hydrochloric acid to chlorine.
(iv) Hydrogen and chlorine reacts in presence of _________ to form hydrogen chloride.
(v) On addition of silver nitrate to hydrochloric acid ________ precipitate is formed which is soluble in __________.
(vi) The white precipitate of lead chloride is soluble in __________.

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Solution

(i) Aqua-regia is a mixture of three parts of concentrated hydrochloric acid and one part of concentrated nitric acid.
(ii) A constant boiling mixture of water and hydrochloric acid is also called an azeotrope.
(iii)An oxidising agent converts hydrochloric acid to chlorine.
(iv) Hydrogen and chlorine react in the presence of diffused light to form hydrogen chloride.
(v) On addition of silver nitrate to hydrochloric acid, a white precipitate is formed, which is soluble in ammonium hydroxide.
(vi) The white precipitate of lead chloride is soluble in hot water.


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