Chemical Kineti...

Which reaction in the diagram has the lowest activation energy?

How would the activation energy of the reaction diagram above be affected by an increase in temperature?

Two molecules collide and a reaction not occur. Which of the following is not a valid explanation for this?

Activation energy, by definition, is the minimum amount of energy required for reactants to form products. Which of the following is not true of activation energy?

A graph of concentration versus time data for a first-order reaction gives a straight line in which of the following plots of the data?

Assertion: The rate of the reaction of iron and hydorchloric acid will increase if the iron pieces are cut into smaller pieces.
Reason: Increasing surface area of a reactant helps to reduce activation energy.

In a reaction mechanism consisting of elementary reaction steps where the relative rate of each is given, which of the following is most likely to be the rate-determining step?

Here is another look at the reaction of crystal violet with sodium hydroxide, a first-order reaction (ln $$A$$ v time).
What is the significance of the slope?

Reacting $$Cl$$ with $$NO_{2}Cl$$ molecules produces $$NO_{2}$$ and $$Cl_{2}$$ gases.
Which of the following will require the lowest activation energy based on proper orientation for this reaction?

An experiment was performed to study the kinetics of the decomposition of substance $$X$$. The concentration of $$X$$, $$[X]$$, was monitored over time as the reaction proceeded. The data are shown in the table above. The time interval between concentration measurements was $$1.0\ minutes (60 s)$$.