2. C and D LEARNING ACTIVITY 21. Consider the following hypothetical aqueous reaction:A(aq) – B(aq)A flask is charged with 0.200 mol of A in a total volume of 100.0 mL. The following data are collected:Time (min)Moles of A200.140400.100600.070800.0500.200a. Calculate the number of moles of B at each time in the table, assuming that there are no moleculesof B at time zero and that A cleanly converts to B with no intermediates.b. Calculate the average rate of disappearance of A for each 20-min interval in units of M/s.c. Calculate the average rate of disappearance of A from the start of reaction to t = 80 min in units ofM/s.d. Between t = 0 min and t = 60 min, what is the average rate of appearance of B in units of M/s?Assume that the volume of the solution is constant.2. For each of the following gas-phase reactions, write the rate expression in terms of the appearance ofeach product and disappearance of each reactant:a. Os(g) + H2O(g) → 2 O2(g) + Hz(g)b. 4 NH3(g) + 5 Oz(g) → 4 NO(g) + 6 H;O(g)c. 2 C2H2(g) + 5 O2(g) → 4 CO2(g) + 2 H2O(g)d. CaH;NH2(g) –→ CaHe(g) + NH3(g)3. Consider the reaction Os(g) + H2O(g) → 2 Oz(g) + H2(g). If the concentration of Os is decreasing at therate of 0.025 M/s, what are the rates of change in the concentrations of Oz and H2?

2. For each of the following gas-phase reactions, write the rate expression in terms of the appearance of each product and disappearance of each reactant: a. Os(g) + H2O(g) → 2 O2(g) + H2(g) b. 4 NH3(g) + 5 Oz(g) → 4 NO(g) + 6 H:O(g) c. 2 CAH2(g) + 5 O:(g) → 4 CO2(g) + 2 H:O(g) d. CaH,NH2(g) → CaHe(g) + NH3(g)

2. For each of the following gas-phase reactions, write the rate expression in terms of the appearance of each product and disappearance of each reactant: a. Os(g) + H2O(g) → 2 O2(g) + H2(g) b. 4 NH3(g) + 5 Oz(g) → 4 NO(g) + 6 H:O(g) c. 2 CAH2(g) + 5 O:(g) → 4 CO2(g) + 2 H:O(g) d. CaH,NH2(g) → CaHe(g) + NH3(g)

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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