CHEM 112 Chapter Notes - Chapter 14: Exothermic Welding, Arrhenius Equation, Rate Equation
Document Summary
Reaction rates generally increase when the temperature of the reacting system is increased. Reaction rates generally increase when the concentration of the reactants in a solution is increased. The concentration of a solid reactant is constant. Doubling the pressure would not significantly affect the concentrations of condensed phases, To solve for k, use any trial; to solve for a, find constant concentrations of b; to solve for. B, find constant concentrations of a. and would not be expected to affect the reaction rates of liquids, solids, or their aqueous solutions. Doubling the pressure could be expected to increase the rate of a gas phase reaction because this is equivalent to doubling the concentration of the reactants. Increasing the temperature increases the average energy of the molecules and shifts the energy distribution to the right in the figure. Therefore, the number of molecules with enough energy to react increases at higher temperatures.
