The NIST Chemistry WebBook reports critically evaluated Henry's constants for selected chemicals in water at 25°C. Henry's constants from this source, denoted here by k1. appear in the VLE equation written for the solute m the form:
ki y1 P = Mi
where Mi is the liquid-phase molality of solute species i. expressed as mol i/kg solvent.
(a) Determine art algebraic relation connecting ki to Hi. Henry's constant in Eq. (10.4).
Assume that xi is ''small,"
(b) The NIST Chemistry WebBook pros ides a value of 0.034 mol kg-1 bar-1 for ki of CO2 in H2O at 25°C. What is the implied value of H, in bar? Compare this with the value given in Table 10.1, which came from a different source.