  Consider the reaction below at 100oC.  T2U  (g)   ->  2 T (g)   +  U (g)  When [T2U]o is 0.250 M, the reaction rate is 9.30 x 10-3 M/s, and when [T2U]o is 0.144 M, the reaction rate is 3.09 x 10-3 M/s.  What are the units for the specific-rate constant, k? What are the units of the specific-rate constant, k  A.     L2  mol-1  s-1  B.  s-1  C.   mol L-1  s-1  D.     L mol-1 s-1

Question

Consider the reaction below at 100oC.

T2U  (g)   ->  2 T (g)   +  U (g)

When [T2U]o is 0.250 M, the reaction rate is 9.30 x 10-3 M/s, and when [T2U]o is 0.144 M, the reaction rate is 3.09 x 10-3 M/s.  What are the units for the specific-rate constant, k?

What are the units of the specific-rate constant, k

 A.     L2  mol-1  s-1 B.  s-1 C.   mol L-1  s-1 D.     L mol-1 s-1
Step 1

Given reaction,

Step 2

From the given data, we can say that the given reaction is first order reaction because the reaction rate depends on the concentration of a single reactant.

Therefore, unit of rate constant for the given reaction is s-1.

Units of rate constant for various orders,

Step 3

Option (B) s-1 is the correct answer....

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Chemical Kinetics 