Give reason for the following:
a) we can store copper sulphate solution in a silver vessel but not silver nitrate solution in a copper vessel.
B) the reaction of zinc with dilute nitric acid doesn't produce hydrogen gas.
c) Food cans are coated with tin rather than zinc.

since copper is more reactive than silver,it will displace silver from its salt solution,and form copper nitrate,which will go in the solution.in doing this.copper in copper vessel gets dissolved to form copper nitrate.reaction is  Cu+AgNO₃=CuNO₃+Ag.but storing copper sulphate solution in silver vessel is possible as silver is less reactive than copper,so no such reaction takes place.

B.hydrogen gas is not evolved when a metal reacts with nitric acid,because HNO₃ is astrong oxidising agent.it oxidises  H_{2 produced to water and itself gets reduced to one of the nitrogen oxides NO2 and N2O. hope you will benefit from it.}