Problem: What is the half-life of a compound with a concentration of 0.25 M and an observed rate constant of 0.15 min -1?A.  0.038 min B.  0.22 min   C.  0.83 min   D.  4.6 min     E.  27 min

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We’re being asked to determine the half-life of a compound with a concentration of 0.25 M and an observed rate constant of 0.15 min–1


Recall that half-life is the time needed for the amount of a reactant to decrease by 50% or one-half.


We don’t know the order of the reaction but we can quickly figure it out from the rate constant. Recall that the unit for the rate constant is given by:



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Problem Details

What is the half-life of a compound with a concentration of 0.25 M and an observed rate constant of 0.15 min -1?

A.  0.038 min 

B.  0.22 min   

C.  0.83 min   

D.  4.6 min     

E.  27 min

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