Having trouble figuring out the answer to this! Any help with a step by step exp

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Having trouble figuring out the answer to this! Any help with a step by step explanantion would be great.

Redox couple Based on the redox values in the figure above, re-write the list of chemolithotrophs below in rank order of largest to smallest free energy change upon oxidation of their electron donors with O2 as the electron acceptor. -0.50 cO /glucose (-0.43) 24e 2H H2 (-0.42)2e Co2/methanol (-0.38) 6e NAD /NADH (-0.32)2 e CO2/acetate (-0.28) 8e SH,S (-028)2e So,2 H,s(-0.22)8e Pyruvate/lactate (-0.19)2 e -0.40 -0.30 30- 4328020 Largest AG -0.10 A.Sulfur oxidizers B, Iron oxidizers (pH 7) C. Nitrifying bacteria D.Hydrogen bacteria Fumarate/succinate (+0.03) 2e" Cytochrome boired (+0.035) 1 e" Fe /Fe (+0.2) 1 e,(pH7) Ubiquinoneouired (+0.11)2e Cytochrome Caw/red (+0.25) 1 e +0.20 +0.30 Cytochrome aahed(+0.39)1e +0.40 NO, INO, (+0.42)2e +0.50 +0.60 F+0.70 Smallest&Go, NO3 /N2 (+0.74) 5 e Fe /Fe (+0.76)1 e. (pH 2) +0.80 0/H20(+0.82)2e ANSWER +0.90

Explanation / Answer

B. Iron oxidizers

C .Nitrifying bacteria

A. Sulphur oxidiser

D. Hydrogen bacteria

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