Respuesta :
The average rate of reaction between 10 and 20s is 0.0047 M/s
What is an Average Rate of Reaction ?
Average rate of reaction is equal to the ratio of change in concentration of reactant and product w.r.t the time course for which the change has been noted.
It is asked in the question for the following reaction
NO₂ ----> NO + (1/2)O₂
and the data given of concentration of NO₂ w.r.t time
(time, Concentration) = (0, 1) (10 , 0.951) (20,0.904)
average rate of concentration between 10 and 20s = ?
For this reaction
rate of NO₂ = - Δ[ NO₂]/Δt
rate of NO = -Δ[NO]/Δt
rate of O₂ = 2 * Δ[O₂ ]/[Δt]
All these rates are equal
The average rate of reaction between 10 and 20 s
Rate = - Δ[ NO₂]/Δt
= - (0.904 - 0.951)M /( 20-10 )s
= 0.0047 M/s
Therefore the average rate of reaction between 10 and 20s is 0.0047 M/s.
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