The decomposition of dinitrogen pentoxide is described by the chemical equation

Question

The decomposition of dinitrogen pentoxide is described by the chemical equation 2N_2O_5(g) rightarrow 4 NO_2(a) + O_2(g) If the rate of appearance of O_2 is equal to 2.40 mol/min at a particular moment, what is the rate of disappearance of N_2O_5 at that moment? A) 9.60 mol/min B) 4.80 mol/min C) 1.20 mol/min D) 0.600 mol/min A concentration-time study of the gas phase reaction 2 A_3 rightarrow 3 A_2 produced the data in the table below What is the average rate of decomposition of A_3 (Delta[A_3]/Delta t) in the time interval 20-30 seconds? A) 4.00 times 10^-4 M/s B) 3.50 times 10^-5 M/s C) 4.00 times 10^-6 M/s D) 5.00 times 10^-6 M/s

Explanation / Answer

3). From Given balanced chemical equation we can say that

Rate of reaction= rate of disappearance of N2O5÷2= rate of appearance of NO2÷4= rate of appearance of O2

We can also say that rate of disappearance of N2O5=2×rate of appearance of O2= 2×2.40=4.80mol/min

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