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ICSE Class 10 Answered

give a chemical test to distinguish between dil.sulphuric acid and conc.sulphuric acid

Asked by hrmeenal24 | 01 Nov, 2019, 05:52: PM
Expert Answer

1. Dilute sulphuric acid treated with zinc gives Hydrogen gas which bums with pop sound.

Concentrated H2SO4 gives SO2 gas with zinc and the gas turns Acidified potassium dichromate paper green.

2.Barium chloride solution gives white ppt. with dilute H2SO4, This white ppt. is insoluble in all acids.

Concentrated H2SO4 and NaCl mixture when heated gives dense white fumes if glass rod dipped in Ammonia solution is brought near it.

Answered by Ramandeep | 01 Nov, 2019, 06:30: PM
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