Advertisements
Advertisements
Questions
What is the rate constant?
What do you understand by rate constant?
What is meant by the rate constant of a reaction?
Advertisements
Solution 1
When the concentration (active mass) of each reactant is at unity, the rate constant of a chemical reaction equals the rate of the reaction.
∵ Rate of reaction ∝ [Reactant]
If A → product, then
rate (R) = k[A]
If [A] = 1, then rate, R = k,
where k is the rate constant.
Solution 2
- The rate constant of a reaction is equal to the rate of reaction when the concentration of each of the reactants is unity.
- At a specific temperature, a reaction's rate constant has a fixed value. As the temperature rises, so does its worth. It is independent of the reactant concentrations at the initiation.
APPEARS IN
RELATED QUESTIONS
A first order reaction has a rate constant 1.15 × 10−3 s−1. How long will 5 g of this reactant take to reduce to 3 g?
Time required to decompose SO2Cl2 to half of its initial amount is 60 minutes. If the decomposition is a first order reaction, calculate the rate constant of the reaction.
A first order reaction is 50% completed in 1.26 × 1014 s. How much time would it take for 100% completion?
With the help of an example explain what is meant by pseudo first order reaction.
A first order reaction is 50% complete in 20 minute What is rate constant?
Time required to decompose SO2Cl2 to half of its initial concentration is 60 minutes. If the de-composite is a first order reaction, calculated the rate constant of the reaction-
The reaction \[\ce{SO2Cl2(g) -> SO2(g) + Cl2(g)}\] is a first-order gas reaction with k = 2.2 × 10−5 sec−1 at 320°C. The percentage of SO2Cl2 is decomposed on heating this gas for 90 min, is ______%.
The slope in the plot of ln[R] vs. time for a first order reaction is ______.
The slope in the plot of `log ["R"]_0/(["R"])` Vs. time for a first-order reaction is ______.
If the half-life (t1/2) for a first order reaction is 1 minute, then the time required for 99.9% completion of the reaction is closest to ______.
