State the elements that undergo changes in oxidation number

Reference no: EM13519750

Indicate whether the following balanced equations involve oxidation-reduction. If they do, identify the elements that undergo changes in oxidation number.

(a)PBr3(l) +3H2O(l)=H3PO3(aq) + 3HBr(aq)

(b)NaI(aq) + 3HOCl(aq)=NaIO3(aq) + HCl(aq)

(d) 2H2SO4(aq) + 2NaBr(s)=Br2(l) + SO2(g) + Na2SO4(aq) + 2H2O(l)

Reference no: EM13519750

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