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Give tests for conc. sulphuric acid.

Asked by Topperlearning User 25th April 2016, 10:18 AM
Answered by Expert

Test for conc. H2SO4 are as follows:

  • Action of heat on copper and conc. H2SO4 produces sulphur dioxide.

  • Sulphur dioxide gas turns acidified potassium dichromate solution green.

  • Action of heat on sodium chloride and conc. H2SO4 produces hydrogen chloride.

  • The HCl gas gives dense white fumes of ammonium chloride with a glass rod dipped in ammonium hydroxide.

Answered by Expert 25th April 2016, 12:18 PM
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