Step by step please! The redox potential of the P700VP700* redox pair (expressed

Question

Step by step please!

The redox potential of the P700VP700* redox pair (expressed as a reduction potential) is -0.50 V vs. NHE, where P700+ = one electron oxidized, while P700* = one electron reduced state. The redox potential of the NADP+/NADPH redox pair (expressed as a reduction potential) is -0.45 V vs. NHE. These are found in spinach chloroplasts. [If you expressed as an oxidation potential, the P700*/P700+ redox pair = +0 5 V, while the NADPH/NADP+ redox pair = +0.45]. Under high light illumination of isolated spinach thylakoid membranes, one of these spinach chloroplast components serves as a reductant and another functions for an oxidant. Circle only the strongest reductant for the process Calculate E degree reaction between the listed photosystem and nicotinamide with the proper redox reaction set up you might express as a standardized reduction potential. Comment (with a proper reason(s)) whether the reaction is spontaneous one can get the point only with the correct answer for the question 2).

Explanation / Answer

Oxidation:

Oxidation is a process in which either 1 or all following changes occurs:

Reduction:

Reduction is a process in which either 1 or all following changes occurs:

Oxidation and reduction process are reverse process.

Oxidizing agent:

Oxidizing agent is a reactant of a reaction which causes an oxidation through accepting electron.

Reducing agent:

Reducing agent is a reactant of a reaction which causes a reduction through donating electron.

The strongest reducing agent is a (P700+/P700*) with the largest negative number for reducing potential.

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