Which Factor Can Decrease The Rate Of A Chemical Reaction

The rate of a chemical reaction can be decreased by a number of different factors. One factor is the concentration of the reactants. If the concentration of the reactants is decreased the rate of the reaction will also decrease. Another factor that can decrease the rate of a chemical reaction is the temperature. If the temperature is decreased the rate of the reaction will also decrease. The third factor that can decrease the rate of a chemical reaction is the presence of a catalyst. A catalyst is a substance that increases the rate of a chemical reaction without being consumed in the reaction.

What can decrease the rate of a chemical reaction?

Answer: A catalyst.

What is the definition of a catalyst?

Answer: A substance that increases the rate of a chemical reaction without being consumed in the reaction.

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What are the 5 factors that affect the rate of a chemical reaction?

Answer: Concentration surface area temperature pH and catalyst.

How does increasing the concentration of reactants affect the rate of a chemical reaction?

Answer: Increasing the concentration of reactants will usually increase the rate of the reaction.

How does increasing the surface area of a solid reactant affect the rate of a chemical reaction?

Answer: Increasing the surface area of a solid reactant will usually increase the rate of the reaction because there is a greater chance of reactant molecules coming into contact with each other.

How does temperature affect the rate of a chemical reaction?

Answer: In general increasing the temperature will increase the rate of the reaction.

What is the definition of an activation energy?

Answer: The minimum amount of energy that reactant molecules must have in order to successfully undergo a chemical reaction.

How can a catalyst decrease the activation energy of a chemical reaction?

Answer: By providing an alternate pathway for the reaction that has a lower activation energy.

How does a catalyst work?

Answer: A catalyst provides an alternate pathway for the reaction that has a lower activation energy.

What is the definition of a reaction rate?

Answer: The speed at which a chemical reaction occurs.

How is the reaction rate affected by the concentration of reactants?

Answer: The reaction rate is usually increased when the concentration of reactants is increased.

How is the reaction rate affected by the surface area of a solid reactant?

Answer: The reaction rate is usually increased when the surface area of a solid reactant is increased because there is a greater chance of reactant molecules coming into contact with each other.

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How is the reaction rate affected by temperature?

Answer: The reaction rate is usually increased when the temperature is increased.

How is the reaction rate affected by the presence of a catalyst?

Answer: The presence of a catalyst can increase or decrease the reaction rate depending on the specific reaction.

What is the definition of a chemical reaction?

Answer: A chemical reaction is a process that results in the transformation of one or more substances into one or more new substances.

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