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महाराष्ट्र राज्य शिक्षण मंडळएचएससी विज्ञान (सामान्य) इयत्ता १२ वी

Answer the following in brief. What is a zeroth-order reaction?

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प्रश्न

Answer the following in brief.

What is a zeroth-order reaction?

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उत्तर

Reactions in which the rate is independent of the reactant concentration are zeroth-order reaction.

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पाठ 6: Chemical Kinetics - Exercises [पृष्ठ १३७]

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बालभारती Chemistry [English] Standard 12 Maharashtra State Board
पाठ 6 Chemical Kinetics
Exercises | Q 3. xiii. a. | पृष्ठ १३७

संबंधित प्रश्‍न

Answer the following in brief.

Derive the integrated rate law for the first-order reaction.


In a first-order reaction, the concentration of the reactant decreases from 20 mmol dm3 to 8 mmol dm−3 in 38 minutes. What is the half-life of reaction? 


Solve

The half-life of a first-order reaction is 1.7 hours. How long will it take for 20% of the reactant to react?


Rate constant of a reaction is 3.6 × 10–3 s–1. The order of reaction is ______.


Give one example of a pseudo first-order reaction.


Explain pseudo first order reaction with a suitable example.


Explain with the help of a potential energy diagram that the catalyst increases the rate of the reaction.


The rate constant of the first order reaction is 1.386 min–1. Calculate the time required for 80% reactant to decompose?


This reaction follows first-order kinetics. The rate constant at particular temperature is 2.303 × 10−2 hour−1. The initial concentration of cyclopropane is 0.25 M. What will be the concentration of cyclopropane after 1806 minutes? (log 2 = 0.3010)


If 75% of a first order reaction was completed in 60 minutes, 50% of the same reaction under the same conditions would be completed in ____________.


A zero order reaction is 20% complete in 20 minutes. Calculate the value of the rate constant. In what time will the reaction be 80% complete?


How long would it take to electroplate a spoon with 0.1 mol of silver (108 g/mol) at a constant current of 2.0 A using AgNO3?


A first order reaction has rate constant 1 × 10−2 s−1. What time will, it take for 20 g or reactant to reduce to 5 g?


The time of completion of 90% of a first order reaction is approximately ____________.


The activation energy of a reaction is zero. Its rate constant at 280 K is 1.6 × 10-6 s-1, the rate constant at 300 K is ______.


In a first order reaction, the concentration of the reactant, decreases from 0.8 mol dm−3 to 0.4 mol dm−3 in 15 minutes. The time taken for the concentration to change from 0.1 mol dm−3 to 0.025 mol dm−3 is ____________.


The integrated rate equation for first-order reaction, A → product, is ______.


If time required to decrease concentration of reactant from 0.8 M to 0.2 M is 12 hours, the half life of this first order reaction is ____________.


The half-life of a first order reaction is 6.0 hour. How long will it take for the concentration of reactant to decrease from 0.4 M to 0.12 M?


Which among the following is an example of zero order reaction?


Half-life of first-order reaction \[\ce{X -> Y + Z}\] is 3 minutes. What is the time required to reduce the concentration of 'X' by 90 % of it's initial concentration?


Define the half-life of a first-order reaction.


Which one of the following reactions is a true first-order reaction?


Which of the following reactions is not of the first order?


The rate constant for a first order reaction is 7.0 × 10-4 s-1. If initial concentration of reactant is 0.080 M, what is the half-life of reaction?


Consider the following reaction.

\[\ce{SO2(g) + 1/2 O2(g) <=>[K1] SO3(g)}\]

\[\ce{2SO3(g)<=>[K2] 2SO2(g) + O2(g)}\]

What is the relation between K1 and K2?


A radioactive isotope decayed to 17/32 of its original mass after 60 minutes. Find the half-life of this radioisotope.


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