ICSE Class 10 Chemistry Question 34 of 63

Study of Compounds — Nitric Acid — Question 34

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34
Question

Question 3(2011)

Choose the correct answer from the choices given – The brown ring test is used for detection of:

(A) CO32-
(B) NO31–
(C) SO32-
(D) C11-

Answer

NO31–

6FeSO4 + 3H2SO4 [conc.] + 2HNO3 [dil.] ⟶ 3Fe2(SO4)3 + 4H2O + 2NO

FeSO4 + NO ⟶ FeSO4.NO [Nitroso Iron [II] Sulphate] - brown compound