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1988 WAEC Chemistry Theory (a) Write the ionic equation for the reaction between zinc powder and silver trioxonitrate (VI)...

Chemistry
WAEC 1988

(a) Write the ionic equation for the reaction between zinc powder and silver trioxonitrate (VI) solution

(b) Which substance in (a) above is (i) oxidized, (ii) reduced?

(c) State two applications of oxidation numbers

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Explanation

(a) Zn\(_{(s)}\) + 2Ag\(^+_{(aq)}\) --> Zn\(^{2+}_{(aq)}\) + 2Ag\(_{(S)}\)

(b)(i) In (a) above Zinc is oxidised

(ii) In (a) above Silver is reduced.

(c) Oxidation numbers identify which element in a compound is the giver or the acceptor of electron. Oxidation number is applied in the I.U.P.A. naming system.


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