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A change in which factor will affect the rate of reaction only when gases are involved?

Which factor will affect the rate of reaction only when gases are involved?

Reactions occur when two reactant molecules effectively collide, each having minimum energy and correct orientation. Reactant concentration, the physical state of the reactants, and surface area, temperature, and the presence of a catalyst are the four main factors that affect reaction rate.

What factors affect rate of reaction?

Reactant concentration, the physical state of the reactants, and surface area, temperature, and the presence of a catalyst are the four main factors that affect reaction rate.

What are the 5 factors that affect the rate of 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.

Which changes will increase the rate of reaction?

Usually, an increase in temperature causes an increase in the reaction rate. A higher temperature means that the molecules have a higher average kinetic energy and more collisions per unit time. It also increases the number of collisions that have enough energy to cause a reaction to take place.

Which factor has no influence on the rate of reaction?

Solution: Molecularity of the reaction does not influence the rate of reaction.

Which one does not affect the rate of reaction?

Solution: The enthalpy change, ΔH is difference of energy between reactant and product molecules. Step by step solution by experts to help you in doubt clearance & scoring excellent marks in exams.

What makes a reaction reversible?

Reversible Reactions

After products are formed, the bonds between these products are broken when the molecules collide with each other, producing sufficient energy needed to break the bonds of the product and reactant molecules. If the reactants are formed at the same rate as the products, a dynamic equilibrium exists.

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What is rate of reaction write two factors that affect the rate of reaction?

Answer. 1)concentration of reactants. 2)temperature.

How does a catalyst speed up a reaction?

A catalyst is a substance that can be added to a reaction to increase the reaction rate without getting consumed in the process. Catalysts typically speed up a reaction by reducing the activation energy or changing the reaction mechanism. Enzymes are proteins that act as catalysts in biochemical reactions.

What is half life period of a reaction?

The halflife of a reaction, t1/2, is the amount of time needed for a reactant concentration to decrease by half compared to its initial concentration.

What is average rate of a reaction?

The average rate of reaction is said to positive when the rate of concentration of product increases. The average rate of reaction is said to negative when the rate of concentration of the reactant decreases.

What affects percentage yield?

The yield and rate of a chemical reaction depend on conditions such as temperature and pressure. The percentage yield is decreased if the reactants do not completely form the products.

How can the rate of reaction be changed?

How to change the rate of a reaction

  1. There are 4 methods by which you can increase the rate of a reaction:
  2. Increase the concentration of a reactant.
  3. Increase the temperature of the reactants.
  4. Increase the surface area of a reactant.
  5. Add a catalyst to the reaction.

How can you increase the speed of a reaction?

How to increase reaction speed

  1. raise the temperature;
  2. add a catalyst;
  3. increase the concentration of reagents;
  4. change the aggregate state of reagents, reduce their size (increase the area of contact of substances).
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How does pressure affect the rate of reaction?

Pressure. If the pressure of gaseous reactants is increased, there are more reactant particles for a given volume. There will be more collisions and so the reaction rate is increased. The higher the pressure of reactants, the faster the rate of a reaction will be.

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