Na[BH.sub.4] (1.054 g) was added slowly, and an exergonic
reaction was observed at each addition.
Even back in the Hilton's well-appointed marble bathroom, things could be reassuringly exergonic
. Bathing an obdurate, slippery twenty-three-pound mermaid in a porcelain sink--to my knowledge, TWITCH has never even rated this wet little parcel of calvary.
H2 is delivered using the donors: lactate; ethanol (EtOH); butyrate; or propionate substrates; whose fermentation to H2 is exergonic
under H2 partial pressures (ceilings) of less than: 1; 0.1; 10(exp -3.5), and 10(exp -4.4) atm, respectively.
Table III The electrochemical potential (in V) of each ion across the plasma membrane and vacuolar membrane of a characean internodal cell and the plasma membrane of a squid nerve Characean internodal cell Squid nerve Plasma membrane Vacuolar membrane Plasma membrane [Cl.sup.-] -0.283 0.041 -0.049 [Na.sup.+] -0.080 -0.059 -0.150 [K.sup.+] 0 -0.008 0 [Ca.sup.2+] -0.239 -0.131 -0.193 If we assume that an ion is moving from a P-space (initial state) to an E-space (final state), we can tell whether the movement is spontaneous (passive, or exergonic
) in this direction by multiplying the electrochemical potential with the product of the valence of the ion times the Faraday (zF).
It is obvious from the values in Table 3 that the formation of all the juglone chelates in gas phase is exothermic and exergonic
, meaning that these reactions are thermodynamically feasible.