How do you know if a reaction is slow and fast?

How do you know which reaction is the fastest?

The frequency of collisions: The more often molecules collide with each other, the faster the reaction proceeds. The energy of collisions: The more forcefully molecules collide with each other, the more likely they are to react, and the faster the reaction proceeds.

How do you tell if a reaction is faster than another?

Concentration: If there is more of a substance in a system, there is a greater chance that molecules will collide and speed up the rate of the reaction. If there is less of something, there will be fewer collisions and the reaction will probably happen at a slower speed.

How do you know which reaction is slowest?

The slowest step in a reaction mechanism is known as the rate-determining step. The rate-determining step limits the overall rate and therefore determines the rate law for the overall reaction.

What is a slow reaction?

The slow reaction is defined as the reaction which takes longer time to complete. The slow reaction possesses a low rate of reaction. They possess higher activation energy. The example of slow reactions are rusting of a water pipe, a piece of newspaper turning yellow and so forth.

What makes a reaction faster?

Increasing the number of collisions speeds up the reaction rate. The more reactant molecules there are colliding, the faster the reaction will be. … In most simple cases, increasing the concentration of the reactants increases the speed of the reaction.

How do you find the slow step?

How do you predict rate law?

The experimentally determined rate law for the reaction of NO2 with CO is the same as the predicted rate law for step 1. This tells us that the first elementary reaction is the rate-determining step, so k for the overall reaction must equal k1.
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Answer.
step 1 NO+NOk1→N2O2 (fast)
step 3 N2O+H2k3→N2+H2O (fast)
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Nov 7, 2021

What are 4 ways to speed up the rate of a reaction?

Four Ways to Speed Up a Chemical Reaction
  • Use a Catalyst. A catalyst is a substance that can alter the rate of a chemical reaction. …
  • Increase the Temperature. …
  • Concentrate of the Reactants. …
  • Increase the Surface Area of the Reactants.