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The concept of t1/2 is useful for the reaction of:
- a)Zero order
- b)1 order
- c)2 order
- d)All order
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
The concept of t1/2 is useful for the reaction of:a)Zero orderb)1 orde...
For 1st order rxn....t1/2 is independent of reactant concentration....hence can be calculated easily...and hence it is of great importance.....while in rxns of order other than 1 ...it depends on reactant concentration..
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The concept of t1/2 is useful for the reaction of:a)Zero orderb)1 orde...
T1/2, also known as half-life, is a concept that is useful for the reaction of a first-order reaction. The half-life of a reaction is defined as the time required for the concentration of a reactant to decrease by half.
First-order reactions are those in which the rate of reaction is directly proportional to the concentration of a single reactant. In other words, the rate of reaction is proportional to the concentration of the reactant raised to the power of one.
Now let's understand why the concept of half-life is specifically useful for first-order reactions:
1. First-order reactions have a constant half-life:
- In first-order reactions, the concentration of the reactant decreases exponentially over time.
- The rate constant (k) for a first-order reaction remains constant throughout the reaction.
- As a result, the time required for the concentration to decrease by half remains constant.
- This constant half-life property makes it easier to determine the rate constant and predict the rate of reaction.
2. Half-life can be used to determine the rate constant:
- The half-life of a first-order reaction is related to the rate constant (k) by the equation t1/2 = 0.693/k.
- By measuring the half-life of a first-order reaction and knowing the initial concentration of the reactant, the rate constant can be calculated.
- This allows us to quantitatively analyze the reaction kinetics and understand the rate at which the reactant is being consumed.
3. Half-life can be used to predict the progress of the reaction:
- The concept of half-life allows us to estimate the time required for a reactant to be completely consumed.
- By using the half-life and the initial concentration of the reactant, we can determine the time it takes for the concentration to reach a specific value.
- This helps in planning and controlling reactions, as we can predict when a reaction will be complete or how long it will take to reach a desired concentration.
In conclusion, the concept of t1/2 or half-life is specifically useful for first-order reactions. It allows us to determine the rate constant, predict the progress of the reaction, and understand the kinetics of the reaction. It is not applicable to zero-order or second-order reactions as their rate of reaction is not directly proportional to the concentration of a single reactant.
First-order reactions are those in which the rate of reaction is directly proportional to the concentration of a single reactant. In other words, the rate of reaction is proportional to the concentration of the reactant raised to the power of one.
Now let's understand why the concept of half-life is specifically useful for first-order reactions:
1. First-order reactions have a constant half-life:
- In first-order reactions, the concentration of the reactant decreases exponentially over time.
- The rate constant (k) for a first-order reaction remains constant throughout the reaction.
- As a result, the time required for the concentration to decrease by half remains constant.
- This constant half-life property makes it easier to determine the rate constant and predict the rate of reaction.
2. Half-life can be used to determine the rate constant:
- The half-life of a first-order reaction is related to the rate constant (k) by the equation t1/2 = 0.693/k.
- By measuring the half-life of a first-order reaction and knowing the initial concentration of the reactant, the rate constant can be calculated.
- This allows us to quantitatively analyze the reaction kinetics and understand the rate at which the reactant is being consumed.
3. Half-life can be used to predict the progress of the reaction:
- The concept of half-life allows us to estimate the time required for a reactant to be completely consumed.
- By using the half-life and the initial concentration of the reactant, we can determine the time it takes for the concentration to reach a specific value.
- This helps in planning and controlling reactions, as we can predict when a reaction will be complete or how long it will take to reach a desired concentration.
In conclusion, the concept of t1/2 or half-life is specifically useful for first-order reactions. It allows us to determine the rate constant, predict the progress of the reaction, and understand the kinetics of the reaction. It is not applicable to zero-order or second-order reactions as their rate of reaction is not directly proportional to the concentration of a single reactant.
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The concept of t1/2 is useful for the reaction of:a)Zero orderb)1 orderc)2 orderd)All orderCorrect answer is option 'B'. Can you explain this answer? for Chemistry 2025 is part of Chemistry preparation. The Question and answers have been prepared according to the Chemistry exam syllabus. Information about The concept of t1/2 is useful for the reaction of:a)Zero orderb)1 orderc)2 orderd)All orderCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Chemistry 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The concept of t1/2 is useful for the reaction of:a)Zero orderb)1 orderc)2 orderd)All orderCorrect answer is option 'B'. Can you explain this answer?.
The concept of t1/2 is useful for the reaction of:a)Zero orderb)1 orderc)2 orderd)All orderCorrect answer is option 'B'. Can you explain this answer? for Chemistry 2025 is part of Chemistry preparation. The Question and answers have been prepared according to the Chemistry exam syllabus. Information about The concept of t1/2 is useful for the reaction of:a)Zero orderb)1 orderc)2 orderd)All orderCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Chemistry 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The concept of t1/2 is useful for the reaction of:a)Zero orderb)1 orderc)2 orderd)All orderCorrect answer is option 'B'. Can you explain this answer?.
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