uestion 2017 Spring CHEM 1u General Chemistry ll Question 13 1240 Part B/Chapter
ID: 480119 • Letter: U
Question
uestion 2017 Spring CHEM 1u General Chemistry ll Question 13 1240 Part B/Chapter 13 12 m Figure 2 of 2 The concentrations of O2and NO2increase as the concentration of N205 decreases. 0.03 NO2 The slope of the hypotenuse of each triangle gives the average rate of AINOhl 0.0022 M change of the product or reactant At 100 s concentration during the indicated time interval. 0.02 AINO.l o0037 M At 100s 001 AIN2Osl At 100 s No's Ol 0.000 M At m 100 s 100 200 300 400 500 600 700 800 Time (s) The rate of formation of o is one-fourth the rate of formation of NO, and one-half the rate of decomposition of Naos-Explanation / Answer
2N2O5 --------------> 4NO2 + O2
rate = - 1/2 d[N2O5] / dt
from the graph,
- 1/2 d[N2O5] / dt = -(-0.0019 ) / 100 = 1.9 x 10^-5 M/s
-d[N2O5] / dt = 3.8 x 10^-5 M/s
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