1. Indicate whether the following balanced equations involve oxidation-reduction. If they do, identify the elements that undergochanges in oxidation number. (a) PBr3(l) + 3 H2O(l) → H3PO3(aq) + 3 HBr(aq) (b) 3 SO2(g) + 2 HNO3(aq) + 2 H2O(l) → 3 H2SO4(aq) + 2 NO(g)

Chemistry & Chemical Reactivity
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Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
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Chapter19: Principles Of Chemical Reactivity: Electron Transfer Reactions
Section19.4: Standard Electrochemical Potentials
Problem 19.5CYU: (a) Rank the following metals in their ability to function as reducing agents: Hg, Sn, and Pb. (b)...
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1. Indicate whether the following balanced equations involve oxidation-reduction. If they do, identify the elements that undergo
changes in oxidation number.

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

(b) 3 SO2(g) + 2 HNO3(aq) + 2 H2O(l) → 3 H2SO4(aq) + 2 NO(g)

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