What is the speed of rate determining step?
Correct answer: B. Slow and decreasing
- A. Very fast and increasing
- B. Slow and decreasing
- C. Moderate and decreasing
- D. Continuously increasing
Explanation
The speed of the rate-determining step is slow. The rate-determining step is the slowest step in a reaction mechanism. This means that it is the step that limits the overall rate of the reaction. The rate of the rate-determining step is determined by the activation energy of the step.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Reaction Kinetics
Reaction kinetics relates reaction rate to concentration, temperature, surface area and catalysts. Questions cover rate laws, reaction order, rate constants, activation energy and the activated complex, including how a catalyst lowers the activation energy without changing the overall energy change or equilibrium position.
Practise Reaction Kinetics
573 free Reaction Kinetics MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Chemistry questions like this
Chemistry is on 14 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Reaction Kinetics questions
If the energy of the activated complex lies close to energy of reactants, it means that reaction is
For an endothermic reaction A → B , an activation energy of forward reaction is 15 kcal mol-1 and enthalpy change of reaction is 5 kcal mol-1. The activation energy for reverse reaction B → A is
If reactants are conductor of electricity, then _ method is used to measure the change in concentration of reaction.
What is the effect of decrease in reactants concentration on protium concentration?
_ are units of rate of reaction.
_ units are used in place of molar concentration in gas phase reactions.