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Adding a catalyst to a chemical reaction changes the rate of reaction by causing
(1) a decrease in the activation energy
(2) an increase in the activation energy
(3) a decrease in the heat of reaction
(4) an increase in the heat of reaction
1
2
3
4

Adding a catalyst to a chemical reaction changes the rate of reaction by causing $\newline$ ( $1$ ) a decrease in the activation energy $\newline$ ( $2$ ) an increase in the activation energy $\newline$ ( $3$ ) a decrease in the heat of reaction $\newline$ ( $4$ ) an increase in the heat of reaction $\newline$ $1$ $\newline$ $2$ $\newline$ $3$ $\newline$ $4$

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Identify direct variation and inverse variation

Full solution

Q. Adding a catalyst to a chemical reaction changes the rate of reaction by causing

\newline

(

1

) a decrease in the activation energy

\newline

(

2

) an increase in the activation energy

\newline

(

3

) a decrease in the heat of reaction

\newline

(

4

) an increase in the heat of reaction

\newline

1

\newline

2

\newline

3

\newline

4

Recall Catalyst Function: Recall what a catalyst does in a chemical reaction. $\newline$ A catalyst lowers the activation energy needed for the reaction to proceed, but it doesn't get consumed in the process.
Match Description to Choices: Look at the choices and see which one matches the description of what a catalyst does. $\newline$ $(1)$ says a decrease in the activation energy, which sounds right cuz that's what catalysts do.
Eliminate Incorrect Options: Check the other options to make sure they don't describe what a catalyst does. $\newline$ $(2)$ says an increase in the activation energy, but that's the opposite of what a catalyst does. $\newline$ $(3)$ and $(4)$ talk about the heat of reaction, but that's not related to what a catalyst does to the activation energy.
Choose Correct Answer: Choose the correct answer based on the information from the previous steps. $\newline$ The answer is $(1)$ a decrease in the activation energy.

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