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For a hypothetical reaction, A rarr L th...

For a hypothetical reaction, `A rarr L` the rate expression is
rate `=-(dC_(A))/(dt)`

A

negative sign represents that rate is negative

B

negative sign pertains to the decrease in the concentrations of reactants

C

negative sign indicates the attractive forces between reactants

D

none of the above is correct

Text Solution

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The correct Answer is:
To solve the question regarding the rate expression for the hypothetical reaction \( A \rightarrow L \), we will analyze the given rate expression and the implications of the negative sign in it. ### Step-by-Step Solution: 1. **Identify the Reaction**: The reaction given is \( A \rightarrow L \). Here, \( A \) is the reactant that is being converted into the product \( L \). 2. **Understand the Rate Expression**: The rate expression provided is: \[ \text{rate} = -\frac{dC_A}{dt} \] where \( C_A \) is the concentration of reactant \( A \) and \( t \) is time. 3. **Interpret the Negative Sign**: The negative sign in the rate expression indicates that the concentration of reactant \( A \) decreases over time as the reaction progresses. This is because as \( A \) is consumed to form product \( L \), its concentration diminishes. 4. **Relate to Product Formation**: While the concentration of \( A \) decreases, the concentration of the product \( L \) increases. If we were to express the rate of formation of \( L \), it would be a positive value, indicating that as \( A \) is consumed, \( L \) is produced. 5. **Conclusion**: The negative sign in the rate expression signifies that the concentration of the reactant \( A \) is decreasing with time. Therefore, the correct interpretation of the negative sign is that it pertains to the decrease in the concentration of the reactant. ### Final Answer: The negative sign in the rate expression indicates that the concentration of the reactant \( A \) decreases with time.
To solve the question regarding the rate expression for the hypothetical reaction \( A \rightarrow L \), we will analyze the given rate expression and the implications of the negative sign in it. ### Step-by-Step Solution: 1. **Identify the Reaction**: The reaction given is \( A \rightarrow L \). Here, \( A \) is the reactant that is being converted into the product \( L \). 2. **Understand the Rate Expression**: The rate expression provided is: \[ ...
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