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Average Rate of Reaction

#### Q. 8) A concentration-time study of the gas phase reaction 2 A3 →3 A2 produced the data in the table below.What is the average rate of formation of A2 in the time interval 20-30 seconds?

Solved • Jun 27, 2019

Average Rate of Reaction

#### Q. 7) The decomposition of dinitrogen pentoxide is described by the chemical equation 2 N2O5(g) →4 NO2(g) +O2(g) If the rate of appearance of O2 is equal to 2.40 mol/min at a particular moment, what is the rate of disappearance of N2O5 at that moment? A) 1.20 mol/min B) 9.60 mol/min C) 4.80 mol/min D) 0.600 mol/min

Solved • Jun 27, 2019

Average Rate of Reaction

#### Q. 5) The decomposition of dinitrogen pentoxide is described by the chemical equation 2 N2O5(g) →4 NO2(g) +O2(g) If the rate of disappearance of N2O5 is equal to 1.40 mol/min at a particular moment, what is the rate of appearance of NO2 at that moment? A) 1.40 mol/min B) 2.80 mol/min C) 5.60 mol/min D) 0.700 mol/min

Solved • Jun 27, 2019

Average Rate of Reaction

#### Q. 4) The reaction that occurs in a Breathalyzer, a device used to determine the alcohol level in a person's bloodstream, is given below. If the rate of appearance of Cr2(SO4)3 is 1.24 mol/min at a particular moment, what is the rate of disappearance of C2H6O at that moment? 2 K2Cr2O7 + 8 H2SO4 + 3 C2H6O →2 Cr2(SO4)3 + 2 K2SO4 + 11 H2O A) 1.86 mol/min B) 3.72 mol/min C) 0.826 mol/min D) 0.413 mol/min

Solved • Jun 27, 2019

Average Rate of Reaction

#### Q. 3) For the reaction shown below, what is the relationship between the rate of formation of Br2 and the rate of reaction of Br- over the same time period? ClO2 -(aq) + 4 Br-(aq) + 4 H+(aq)→Cl-(aq) + 2 Br2(aq) +2 H2O(l) A) rate of formation of Br2 = 1/4 × rate of reaction of Br- B) rate of formation of Br2 = 1/2 × rate of reaction of Br- C) rate of formation of Br2 = 2 × rate of reaction of Br- D) rate of formation of Br2 = 2 × rate of reaction of Br-

Solved • Jun 27, 2019

Average Rate of Reaction

#### Q. 2) The decomposition of dinitrogen pentoxide is described by the chemical equation 2 N2O5(g) →4 NO2(g) +O2(g) If the rate of appearance of NO2 is equal to 0.560 mol/min at a particular moment, what is the rate of appearance of O2 at that moment? A) 1.12 mol/min B) 0.140 mol/min C) 2.24 mol/min D) 0.280 mol/min

Solved • Jun 27, 2019

Average Rate of Reaction

#### Q. 1) Molecular hydrogen can be made from methane gas by the reaction below. How is the rate of disappearance of CH4 related to the rate of appearance of H2?

Solved • Jun 27, 2019