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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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WAEC offline past questions - with all answers and explanations in one app - Download for free
WAEC May/June 2024 - Practice for Objective & Theory - From 1988 till date, download app now - 99995
WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 24709
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WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 24709
WAEC offline past questions - with all answers and explanations in one app - Download for free
WAEC May/June 2024 - Practice for Objective & Theory - From 1988 till date, download app now - 99995
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts