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Which type of reaction occurs in the following? 2HgO(s) 2Hg(l) + O2(g)



A.a decomposition reaction in which a metal is reduced

B.an acid-base neutralization reaction to produce oxygen gas

C.a displacement reaction involving two metals

D.a combustion reaction involving burning a metal in oxygen

Verified Answer :

XxMikexX

A.a decomposition reaction

In this reaction, reactant HgO decomposes into more than one products hence reaction is called decomposition.Hg in HgO has oxidation number of +2 whereas oxidation number of Hg in product side is zero( zero because Hg is in its elemental form) so Hg is reduced. Hence A is correct option.

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