The standard reduction potentials (E^10) for the following half reactions are gi

Question

The standard reduction potentials (E^10) for the following half reactions are given in the attached tables. NO_3^- + 2H^+ + 2e^- rightarrow NO_2^- + H_2O FAD + 2H^+ + 2e^- rightarrow FADH_2 If you mixed nitrate (NO_3^-),nitrite (NO_2^-), FAD, and FADH_2 together, allat 1 M concentrations and in the presence of the appropriate enzyme catalyst, what would happen initially to each of the reactants? (circle one option per pair for the 4 pairs below) A) No_3^- concentration increases or decreases B)FAD concentratration increases or decreases c) NO_2^- concentration increases or decreases D) FADH_2 concentration increases or decreases 4.) In each pair, circle the more oxidized compound: a) b)Fe^2+ Fe^3+

Explanation / Answer

I need the E° so I can have an idea of how the reaction is going. This actually depends of how the reaction is going; If the NO3 is reducting we can say that the NO3 concentration will be decreasing and the NO2 will increase, while the FAD will increase and FADH will decrease, but please provide those data.

For question 4, oxidation is when you lose electrons (oxidation state higher or more positive than negative).

In the first pair, you can actually use a reaction to oxidize the OH to a carbonyl group, so the second compound, is the more oxidized compound.

In the second pair, Fe can actually work with 2+ and 3+ state, however, in the case of Fe3+ is the higher oxidation state and you can actually oxydize Fe2+ to Fe3+, so the Fe3+ is more oxydized.

Hope this helps

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