(a)(i) List three characteristic properties of transition metals

(ii) 0.45g of a metal M was deposited when a current of 1.8 amperes was passed for 12.5 minutes through a solution containing M\(^{2+}\). Calculate the relative atomic mass of M. [1 Faraday = 96500 C]

(iii) Give the reason why copper-plated iron corrodes easily when the surface is scratched.

 

(b)(i) State the law of definite proportions (constant composition).

(ii) Describe in outline, an experimental procedure for determining the proportion of oxygen in a given sample of copper(II) oxide.

(iii) Write an equation to show how copper (II) oxide can be obtained directly from copper (II) trioxonitrate (V)