Physical Chemistry CUME Chemistry CUME March 2017 LORIEAU 1. Consider these two reactions in a low...
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Physical Chemistry CUME March 2017 LORIEAU 1. Consider these two reactions in a low dielectric environment (like oil, or the center of a membrane, e=2) versus a high dielectric environment (like water, e=80). HA pK A ! ⇀ !! ↽ ! !! A − + H + BH + pK B ! ⇀ !! ↽ ! !! B + H + i. Derive the pH equations for both reactions in terms of concentrations. ii. Derive the ΔpK equation for both reactions between a low and high dielectric. iii. What terms influence the ΔpK? iv. What would be the sign of the ΔpK between a high and low dielectric environment and why? v. How would the different dielectric constants influence the ∆Gº of the reactants and products of each type of acid?
Transcript of Physical Chemistry CUME Chemistry CUME March 2017 LORIEAU 1. Consider these two reactions in a low...
Physical Chemistry CUME March 2017
LORIEAU
1. Consider these two reactions in a low dielectric environment (like oil, or the center of a membrane, e=2)versus a high dielectric environment (like water, e=80).
HA pKA! ⇀!!↽ !!! A− +H+
BH+ pKB! ⇀!!↽ !!! B +H+
i. Derive the pH equations for both reactions in terms of concentrations.ii. Derive the ΔpK equation for both reactions between a low and high dielectric.iii. What terms influence the ΔpK?iv. What would be the sign of the ΔpK between a high and low dielectric environment and
why?v. How would the different dielectric constants influence the ∆Gº of the reactants and
products of each type of acid?
