ICSE Class 10 Answered
Give tests for conc. sulphuric acid.
Asked by Topperlearning User | 25 Apr, 2016, 10:18: AM
Expert Answer
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 | 25 Apr, 2016, 12:18: PM
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