1. To the mixture of aqueous solution of a Nitrate salt and Ferrous sulphate, con.H2SO4 is slowly added through the slanted walls of the test tube. A brown ring is formed little above (nearly middle) the bottom of the test tube.
a) What is the significance of this test?
b) Which acts as reductant?
c) What is the change of oxidation state of oxidant?
d) What is the chemical composition of the Brown’s ring?
e) Why con.H2SO4 is added only through the slanted walls of the test tube?
f) Write the related chemical equations for above chemical changes.
1. To the mixture of aqueous solution of a Nitrate salt and Ferrous sulphate, con.H2SO4 is slowly added through the slanted walls of the test tube. A brown ring is formed little above (nearly middle) the bottom of the test tube.
a) What is the significance of this test?
b) Which acts as reductant?
c) What is the change of oxidation state of oxidant?
d) What is the chemical composition of the Brown’s ring?
e) Why con.H2SO4 is added only through the slanted walls of the test tube?
f) Write the related chemical equations for above chemical changes.
iit jee , 14 Years ago
Grade Upto college level
