Consider the following statements and select the correct code. Assert

1.	Consider the following statements and select the correct code. Assertion (A): A chemical reaction becomes faster at higher temperature. Reason (R): At higher temperature, molecular motion becomes more rapid.Codes:(a) Both A and R are true and R is the correct explanation of A. (b) Both A and R are true, but R is not correct explanation of A. (c) A is true, but R is false. (d) A is false, but R is true
Answer» (a) Both A and R are true and R is the correct explanation of A. Explanation: The rates of most reactions increase with a rise in temperature. Raising the temperature increases the fraction of molecules having very high kinetic energies. These are the ones most likely to react when they collide. The higher the temperature, the larger the fraction of molecules that can provide the activation energy needed for reaction.

Consider the following statements and select the correct code. Assertion (A): A chemical reaction becomes faster at higher temperature. Reason (R): At higher temperature, molecular motion becomes more rapid.Codes:(a) Both A and R are true and R is the correct explanation of A. (b) Both A and R are true, but R is not correct explanation of A. (c) A is true, but R is false. (d) A is false, but R is true

Answer»

(a) Both A and R are true and R is the correct explanation of A.

Explanation:

The rates of most reactions increase with a rise in temperature. Raising the temperature increases the fraction of molecules having very high kinetic energies. These are the ones most likely to react when they collide. The higher the temperature, the larger the fraction of molecules that can provide the activation energy needed for reaction.

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