Redox Conditions during Nebular Condensation

Theory: In thermodynamic calculations of molecular equilibria in high-temperature cosmic gases, is so stable that it consumes the entirety of whichever of C or O is the lower in abundance, leaving the excess of the more abundant element to form other molecules and condensates. The best estimate of the solar C/O ratio is 0.50 [1,2], yielding oxide and silicate condensates, and of the H/O ratio is 2041 [3], yielding a very reduced system. Virtually all oxygen in excess of that in and condensates reacts with hydrogen to form , and virtually all of the remaining hydrogen forms . During condensation of a solar gas at 10 CO(g )