Factors Affecting Rate of Reaction Flashcard

Front

What is the role of a catalyst in a chemical reaction?

Back

A catalyst lowers the activation energy required for a reaction to occur, thereby increasing the rate of the reaction.

Front

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

Back

Increasing the concentration of reactants increases the rate of reaction due to a higher frequency of collisions between reactant particles.

Front

What happens to the rate of reaction when the concentration of reactants is decreased?

Back

Decreasing the concentration of reactants slows down the rate of reaction because there are fewer particles available to collide.

Front

How does the nature of reactants influence the rate of reaction?

Back

The nature of reactants affects the rate of reaction by influencing the frequency and energy of collisions between particles.

Front

What is the effect of temperature on the rate of reaction?

Back

Increasing temperature generally speeds up the rate of reaction, while decreasing temperature slows it down.

Front

Define activation energy in the context of chemical reactions.

Back

Activation energy is the minimum energy required for reactants to collide and form products.

Front

What is the effect of surface area on the rate of reaction?

Back

Increasing the surface area of reactants increases the rate of reaction by allowing more collisions to occur.

Front

Explain how pressure affects the rate of reaction in gaseous reactions.

Back

Increasing pressure in gaseous reactions increases the rate of reaction by reducing the volume and increasing the concentration of gas particles.

Front

What is the relationship between reaction rate and collision theory?

Back

Collision theory states that for a reaction to occur, reactant particles must collide with sufficient energy and proper orientation.

Front

How do inhibitors affect the rate of reaction?

Back

Inhibitors decrease the rate of reaction by increasing the activation energy or by interfering with the reactants.