Calculating rate of decomposition and formation in a given reaction...? Use the

Question

Calculating rate of decomposition and formation in a given reaction...?

Use the data in the table to calculate the average rate of decomposition of N_2O_5 during the time Interval 0-100 s. Concentration as a Function of Time at 55 degree C for the reaction 2N_2O_2(g) rightarrow 4NO_2(g) + O_2(g) Express your answer using two significant figures. Use the data in the table to calculate the average rate of formation of O_2 during the time interval 0-100 s. Express your answer using two significant figures.

Explanation / Answer

We need to calculate the average rate of decomposition of N2O5 in the interval 0 to 100 s.

The [N2O5] at 0s = 0.02 M and at 100s =0.0169 M

Thus delta [N2O5] = 0.0169 - 0.0200= -0.0031 M

delta t = 100 -0 = 100s

Thus delta [N2O5] /delta t = - (-0.0031)/100

= 3.1x10-5 M/s

Part B

delta [O2] between 0 and 100s = 0.0016-0= 0.0016

delta t = 100 -0 = 100

Thus rate of formation of oxygen = delta [O2]/delta t

= 0.0016/100

= 1.6x10-5 M/s

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