Q11 of 53 Page 71

Write the equations for the reactions of

(i) Iron with steam


(ii) Calcium with water


(iii) Potassium with water

(i) The reaction is as follows:


3Fe + 4H2O → Fe3O4 + 4H2


(ii) The reaction is as follows:


Ca + 2H2O → Ca (OH)2 + H2


(iii) The reaction is as follows:


2K + 2H2O → 2KOH + H2


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Answer the following:

(i) Name a metal which does not stick to glass.


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(iii) What is deposited at the cathode, a pure or impure metal?


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