280 Lecture 6: 66-224+class+7+Fall+2014
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Geochemical cyclesmass transferenergy transferscalesthe c cycletypes of modelsstatic modelsinteractive modelsgeochemical cyclesthe c cycletypes of modelsstatic modelsinteractive modelslong term c cycle examplescause & effectdirect & inverse responsespositive & negative feedbacksubcycles:)posi-ve)vs)nega-ve)feedback subcycle)b6l6g) odd)number)of)circles)=) nega-ve increase(co2? increase(co2(( What(is(calculated(in( equilibrium(thermodynamics? the stable state (lowest energy) predicts)concs)(ac-vi-es))of) species)and)phases)at) equilibrium what about kinetics? rate)of)a?ainment)of) equilibrium)(or)if) Illustration of the states of a system in terms of the gravitational energy of a ball. For our last manipulation we will rearrange equation 2-27 to yield. If the reactions of interest are occurring at 25 c and. 1 bar and the free energy is in kj mol- 1, equation 2-28 can be written in base 10 jog form as log keq = 5. 708 (2-29) Equation 2-29 can only be used for reactions occurring at 25 c and 1 bar. We have now completed our exercise in letter manipulation and everyone should feel very refreshed. The following example illustrates the calculation of an equilibrium constant.
