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प्रश्न
The chemical used in the brown ring test is ______.
विकल्प
CuSO4
FeSO4
Fe2(SO4)3
ZnSO4
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उत्तर
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).
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संबंधित प्रश्न
Write a balanced equation and name the products formed when cupric oxide reacts with nitric acid.
Write an equation for the following conversions A, B, C and D.
Name the Following:
Salt used in the laboratory to prepare nitric acid
Name the Following:
Two coloured nitrates.
What are the reactants required for Ostwald process and what are their sources?
Name the product, catalyst and approximate temperature maintained in Ostwald's process. How is the temperature maintained in the Ostwald's process?
Name (formula is not acceptable) the gas produced in the following reaction:
On warming ammonium sulphate with sodium hydroxide solution.
Write the equation for the reaction of dilute nitric acid with copper.
Explain the following:
Dilute nitric acid is generally considered a typical acid but not so in its reaction with metals.
The figure given below illustrates the apparatus used in the laboratory preparation of nitric acid.
- Name A (a liquid), B (a solid), and C (a liquid). (Do not give the formulae.)
- Write an equation to show how nitric acid undergoes decomposition.
- Write the equation for the reaction in which copper is oxidised by concentrated nitric acid.
