BIOCH499A Study Guide - Exothermic Process, Dinitrogen Tetroxide, Dave Coverly

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You can"t go south, at least not before wednesday and our first midterm exam . Altering equilibrium conditions: concentration, adding/removing reactants/products, pressure, volume, temperature, catalyst. If a change is imposed on a system at equilibrium, the position of equilibrium will shift in a direction that tends to reduce that change: effect of concentration. An example of concentration change, the dissociation of formic acid. Hcooh (aq) + h2o (l) h3o+ (aq) + hcoo (aq) [h3o+] = [hcoo ] since the source for both is the same hcooh. [h+] = [hcoo ] = k [hcooh] = 0. 014 m. If a component is added to a system at equilibrium, the. Add (hcoo)na so that [hcoo ] = 0. 02 m equilibrium position will shift in the direction that tries to lower back the concentration of that component. Result: more hcooh when equilibrium will be reestablished. If the component is removed the reverse effect occurs.