Question

Redox pair	Standard reduction potential
NAD+/ NADH and NADP+/NADPH	-0.32 V
SO42-/S0	-0.22 V
NO3-/NO2-	+0.42 V
Fe3+/Fe2+	+0.77 V
½O2/H2O	+0.80 V

What is the expected energy yield (ΔE) for the transport of electrons from nitrite to iron in iron reducing bacteria?

A. -0.32 V

B. -0.35 V

C. +0.35 V

D. +0.77 V

E. +1.19 V

Answer 1

Please give a thumbs up if this answer helped

To convert nitrite to iron, nitrite should first be oxidized to nitrate which is the reverse of what is given in the above table since the above table shows the reduction potentials. now the next step will be reduction of ferric ion to ferrous ion.