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QuickNotes™  

Temperature Effects, Reaction Rate Theory, Catalysis

  • For most reactions as T increases, so does rate

  • Kinetic molecular theory can explain this

  • Arrhenius equation for temperature effects: k = Ae-E/RT ; A is an orientation factor; E is the activation energy

  • Do calculations of E and A from exptl. Data

  • Catalyst: accelerates rate without being consumed in reaction

  • Catalysts can be homogeneous e.g. acid in hydrolysis of esters; heterogeneous, solid metallic catalysts in reaction of nitrogen with hydrogen to make ammonia

  • Enzymes: common biochemical catalysts, e.g. in digestion

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