How does time affect the rate of reaction?

The rate of a reaction decreases as time progresses. If the amount of reactant particles is decreasing as the reaction progresses, then the chance of successful collisions must also decrease, and ultimately when all the reactant particles have reacted, the reaction must stop and the rate become zero.

What factors affect reaction time?

There are a number offactors that affect reaction time in humans. These mainly include gender, age, physical and mental fitness, sleep deprivation, consumption of intoxicants, and the sensory regime the stimulus belongs to.

What are the two reasons that reaction rates tend to decrease over the course of a chemical reaction?

The factors that affect reaction rates are:

• surface area of a solid reactant.
• concentration or pressure of a reactant.
• temperature.
• nature of the reactants.
• presence/absence of a catalyst.

What is decreased reaction time?

Your reaction time slows as you age because of the gradual loss of neurons, especially with more complex tasks . Hydration. Even just a couple of hours without water can significantly slow your RT. Blood alcohol content.

Why does reaction time vary?

In this example, the processes (perceive, process, and respond), are done in a matter of milliseconds, but reaction time can vary depending on a variety of factors: Familiarity, preparation, and expectations: If you have to respond to a known stimulus that you’ve responded to before, the reaction time will be lower.

Why does a reaction get slower as time increases in terms of particles?

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.

What are the factors that affect reaction rate?

How does the rate of a reaction change as time progresses?

The rate of a reaction decreases as time progresses. Collision Theory tells us that the rate of reaction depends on the reactant particles colliding with energy in excess of the Activation Energy for the reaction. As a reaction progresses the reactants are being turn junto the products, so the number of reactant particles left is decreasing.

How does the concentration of reactants affect the rate of reaction?

As a reaction proceeds, the concentration of reactants decreases, which makes the rate of reaction decrease. Reactions require that the participating substances, the reactants, come close enough to each other for bonds to change.

What happens to the rate of collision when the reactant particles decrease?

If the amount of reactant particles is decreasing as the reaction progresses, then the chance of successful collisions must also decrease, and ultimately when all the reactant particles have reacted, the reaction must stop and the rate become zero.

What is the role of time in chemical reaction?

Basically time is an essential factor in any chemical reaction be it a first-order, second-order, third-order, pseudo except zero-order reactions which is independent of the concentration of the reactants ( concentration/time as rate constant k) The rate of reaction solemnly depends on time.