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Question
For a R→P reaction, the concentration of the reactant changes from 0.06 M to 0.02 M in 20 minutes. Calculate average rate of the reaction.
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Solution
The average rate is defined as the change in the concentration of reactants or products in a given amount of time interval.
For R→P Average Rate, ravg = −Δ[R]Δt or Δ[P]Δtravg = −{[R2]−[R1]}t2−t1On substituting the given parameters, we getravg = −{0.02−0.06}20−0=0.002 M min−1
Therefore, average rate of the reaction is 0.002 M min−1
For R→P
Average Rate, ravg = −Δ[R]Δt or Δ[P]Δtravg = −{[R2]−[R1]}t2−t1
On substituting the given parameters, we get
ravg = −{0.02−0.06}20−0=0.002 M min−1
Therefore, average rate of the reaction is 0.002 M min−1
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