# 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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###### FREE Expert Solution

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:

###### 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

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Identifying Reaction Order concept. If you need more Identifying Reaction Order practice, you can also practice Identifying Reaction Order practice problems.

What is the difficulty of this problem?

Our tutors rated the difficulty ofWhat is the half-life of a compound with a concentration of ...as medium difficulty.

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Based on our data, we think this problem is relevant for Professor All Professors' class at UML.