Learning Goal: To calculate average and relative reaction rates. Reaction rate c

Question

Learning Goal: To calculate average and relative reaction rates. Reaction rate can be defined either as the increase in the concentration of a product per unit time or as the decrease of the concentration of a reactant per unit time. By definition, reaction rate is a positive quantity. In the reaction X rightarrow 2Y, for example, Y is being produced twice as fast as X is consumed and thus rate of X = 1/2(rate of Y) Each rate can be expressed as the change in concentration over the change in time, Delta t: -Delta[X]/Delta t = 1/2(Delta[Y]/Delta t) Consider the reaction 2H3PO4 rightarrow P2O5 + 3H2O Using the information in the following table, calculate the average rate of formation of P2O5 between 10.0 and 40.0 s. Express your answer with the appropriate units.

Explanation / Answer

(8.6-2.6)*10^-3 / 30 s =2*10-4

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