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Questions
Distinguish between the following pair of compounds using the test given with brackets:
Dilute sulphuric acid and dilute hydrochloric acid (using barium chloride solution)
Give a chemical test to distinguish between dilute sulphuric acid and dilute hydrochloric acid [using barium chloride solution].
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Solution
Sulphuric acid precipitates the insoluble sulphate of barium from the solution of barium chloride.
\[\ce{BaCl2 + H2SO4 -> BaSO4\downarrow + HCl}\]
\[\ce{BaCl2 + HCl -> No ppt. formation}\]
Dilute HCl does not react with barium chloride solution, and thus, no precipitate is produced in the reaction.
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B. Dehydrating agent
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1. \[\ce{KNO3 + H2SO4 -> KHSO4 + HNO3}\]
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