The decomposition of N2O5 can be described by the equation. 2N2O5 (soln) ---> 4N

Question

The decomposition of N2O5 can be described by the equation. 2N2O5 (soln) ---> 4NO2 (soln) + O2 (g) Given this data for the reaction at 45 degrees C in carbon tetrachloride solution, calculate the average rate for each successive time interval.

t (s) [N205] (M) The decomposition of N205 can be described by the equation 2.50 2N,os (soln) 4NO, (soln) o,lg) 205 220 1.78 536 Given these data for the reaction at 45°C in carbon tetrachloride solution, 815 1.500 calculate the average rate of reaction for each successive time interval. Interval: 0 s to 205 s 536 s to 815 s 205 s to 536 s Number Number Number Reaction rate: Mis MIS

Explanation / Answer

1) rate = dC/dt = -(1/2) dN2O5 /dt = (-1/2)( (2.2-2.5)/(205-0) = 7.32*10^-4 M/s

2) avg rate = ( -1/2)(1.78-2.20)/(536-205) = 6.34*10^-4 M/s

3) avg rate = ( -1/2) ( 1.5-1.78)/( 815-536) = 5*10^-4 M/s

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