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Question
The chemical used in the brown ring test is ______.
Options
CuSO4
FeSO4
Fe2(SO4)3
ZnSO4
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Solution
The chemical used in the brown ring test is FeSO4.
Explanation:
In the brown ring test for nitrates, ferrous sulphate (FeSO4) reacts with concentrated sulphuric acid (H2SO4) and nitrate ions to form a brown ring due to the formation of the Fe(NO)2+ (nitroso iron complex).
RELATED QUESTIONS
What do you observe when?
Hydrogen sulphide is bubbled through conc. HNO3?
Complete and balance the following equation :
SO2 + HNO3 → ______________
Complete and balance the following equation :
Pt + HNO3 + HCl → ___________
Complete and balance the following equation :
HNO3 + FeSO4 + H2SO4 → ______________
Choose the correct answer from the option given below :
When treated with nitric acid which of the following liberate hydrogen?
Fill in the blank with appropriate word.
Furning nitric acid is obtained by dissolving an excess of _______ in conc. Nitric acid
Give reason for the following:
Commercial concentrated nitric acid is yellow in colour, but when it is dilute with water, it turns colourless.
Give one chemical test for nitric acid.
Write a balanced equation for the production of nitrogen dioxide using copper.
Write the equation for the reaction of dilute nitric acid with copper.
Account for the yellow colour that appears in concentrated nitric acid when it is left standing in an ordinary glass bottle.
