Chemistry 122:The collision Model

Chemistry 122:The collision Model - Chemistry 122 Exam...

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Chemistry 122 2/10/2014 Exam chapter 13 and 14 Everything up to chapter 14.5 is in the exam 14.5 Molecules must collide with the orrect orientation and with enough energy to cause bond breakage and formation. The collision Model Reaction rates are affected by reactant concentrations and by temperature. The collision model accounts for both effects. In a chemical reaction, bonds are broken and new bonds are formed. Molecules can only react if they collide with each other. The greater the number of collisions/second, the greater the reaction rate. If the [reactant] increases, the number of collisions increases, leading to an increase in reaction rate Increasing the temperature increases molecular speeds, thus molecules collide more forcefully leading to an increase in rate. Collision Model is a theory that assumes that, for a reaction to occur, reactant molecules must collide with an energy greater than some minimum value and with the proper orientation.
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