Based on the data given and a rate constant of 0.031 M?1?min?1, calculate the time at which the concentration of reactant A will be 0.175M .

t (min) [A]t(M)

0.00 0.500

20.0 0.382

40.0 0.310

60.0 0.260

80.0 0.2

After 120.0 minutes the the concentration of reactant A will be 0.175 M

Explanation:

Rate constant of the reaction = k =

From the units of rate constant is very much obvious that reaction of second order kinetics.

Initial concentration of reactant =

Final concentration of A after time t =

t = ?

Integrated rate law for second order kinetics is given by:

t = 119.8 min ≈ 120.0 min

After 120.0 minutes the the concentration of reactant A will be 0.175 M

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explanation:

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