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The numerical values of rate constants are same for first, second and third order reactions. Which one is true at a moment for rate of these 3 reactions if concentrations of reactants is same and lesser than 1M 1) r1=r2=r3 2) r1>r2>r3 3) r1 4) none of above Please answer with proper reasoning

The numerical values of rate constants are same for first, second and third order reactions. Which one is true at a moment for rate of these 3 reactions if concentrations of reactants is same and lesser than 1M
1) r1=r2=r3 
2) r1>r2>r3
3) r1
4) none of above 
 
Please answer with proper reasoning 
 
 

Grade:12th pass

3 Answers

Shivansh
askIITians Faculty 267 Points
5 years ago
Sorry, What is the third option?
Shivi .
28 Points
5 years ago
Sorry I didn`t write the whole option.3rd option is :-r1
Vikas TU
14149 Points
5 years ago
k1=k2=k3
For first order reaction,
R1=k1[A]
For second order reaction,
R2=k2[A^2]
For  third reaction order reaction,
R3=k3[A^3]
As A is less than 1M, A would be more than A2  more than  A3  
Therefore,r1 greater than r2 greater than r3.
 
Therefore A option is correct.

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