(a) Explain the statement, the standard electrode potential of zinc is -0.76 v.What is meant by the term periodic property of elements? (b) Consider the fol...

Question 1 Report

(a) Explain the statement, the standard electrode potential of zinc is -0.76 v.What is meant by the term periodic property of elements?

(b) Consider the following standard electrode potentials:
Zn\(^{2+}\)\(_{(aq)}\) + 2e\(^-\)           Zn(s) Eᶿ  = - 0.76 V
Cu\({2+}\)\(_{(aq)}\)  +  2e\(^-\)        Cu(s)  Eᶿ = + 0.34 V

    When the two half cells are connected:
(i)         write the reaction equation at each electrode;
(ii)        write the overall cell reaction equation;
(iii)       state the type of reaction occurring at each electrode;
(iv)       calculate the e.m.f. of the cell.                    

(c) (i)    Name two chemical industries.
(ii)    State two factors that should be considered when siting a chemical industry.
(iii)       List two effects of a chemical industry on the community in which it is sited.              

(d)   Using chemical equations, explain briefly what would happen when hydrogen peroxide is added to:

(i)         silver oxide;
(ii)        chlorine gas.                                 

(e)        List three physical properties of nitrogen.