Lubc.ca/webapps/assessment take aunch sp?course assess et d-J 150218c useid. 116

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Lubc.ca/webapps/assessment take aunch sp?course assess et d-J 150218c useid. 11664518co. UESTION 3 1 points 2A->B+C, itthe concentration of a gas-phase reactant is increased, the observed reaction rate also increases. This is because: the reaction must be second order in A the activation energy is lower, so more molecules can overcome the energy barrier the more frequent molecular colisions increases the temperature of the reaction O the fraction of reactant molecules with high kinetic energy increases, because there are more molaculers the frequency of collision increases, so more reactant collisions can lead to products QUESTION 4 1 pointsSeve Answer The eftect of reactant concentration on the rate of the reaction A B>Products, was studied and the following data was collected Initial rate (MS) 0.005 0.013 188 Given the data above, what is the rate equation for this reaction ? Rate -kA Rate-kA1 20 4 5

Explanation / Answer

Ans 3 : the frequency of collision increases , so more reactant collisions can lead to products.

When the concentration of reactant phase is increased , the number of reactant molecules increases in the reaction mixture. This causes an increase in the frequency of the collisions of the reactant molecules , which lead to the formation of more amount of product in the reaction , which increases the rate of reaction.

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