Photosystem 1 converts light into chemical energy. energy, in the form of photons, is adsorbed by the chlorophyll complex, p700, which donates an electron to a series of modified chlorophyll/phylloquinone complexes that are often just designated ax . the electron is passed down an electron-transport chain, at the end of which nadp+ is reduced. the reduction potentials of p700+, ax , and nadp+ at ph 7.0 and 25oc are 0.490 v, 0.900 v and -0.350 v, respectively. what is δgo in kj/mol at ph 7.0 and 25oc of the reaction: