The initial concentration of N 2 O 5 (g) in the first-order reaction 2 N 2...
The initial concentration of N 2 O 5 (g) in the first-order reaction
2 N 2 O 5 (g)→4 NO 2 (g)+ O 2 (g)
is 0.372 mol/L .
After 30 seconds, the concentration of N 2 O 5 (g) is 0.0744 mol/L .
What is the rate constant for the reaction?
Homework Answers
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The initial concentration of N 2 O 5 (g) in the first-order
reaction
2 N 2...
The initial concentration of N O 2 in the second-order reaction 2N O 2 →2NO+ O...
The initial concentration of N O 2 in the second-order reaction 2N O 2 →2NO+ O 2 is 0.621 mol/L . After 20 seconds, the concentration of N O 2 is 0.583 mol/L . W hat is the rate constant for the reaction?
25. The rate constant of a first-order decomposition reaction is 0.0267 s-l. If the initial concentration...
25. The rate constant of a first-order decomposition reaction is 0.0267 s-l. If the initial concentration of reactant is 0.198 M, what is the concentration of reactant after 30.0 seconds? 26 Hydrogen perovide dome
Q-4 (7.10). The concentration of a reactant in a first-order chemical reaction that proceeds at a...
Q-4 (7.10). The concentration of a reactant in a first-order chemical reaction that proceeds at a rate k can be described as follows: In(C) = ln(Co) - kt, where C is the concentration of the reactant at time t, Co is the initial concentration and t is the elapsed time since the reaction started. Consider an initial concentration of Co = 0.3 mol/L. The experiment was repeated n times to give a geometric mean of the concentration at time t...
The reaction NO(g) + 7/2 Cl_2(g) rightarrow NOCl(g) is first-order in [Cl2] and second order with...
The reaction NO(g) + 7/2 Cl_2(g) rightarrow NOCl(g) is first-order in [Cl2] and second order with respect to [NO]. Under a given set of conditions, the initial rate of this reaction is 6.20 times 10^-6 mol/L s. What is the rate of this reaction if the concentration of NO is doubled and the concentration of Cl_2 is reduced to half the original value? 6.20 times 10^-6 mol/L s 2.48 X 10_5 mol/L s 1.24 times 10^-5 mol/L s 4.96 times...
A gas decomposes to form O2 and two other products, in a first-order reaction, with rate...
A gas decomposes to form O2 and two other products, in a first-order reaction, with rate constant k = 6.95 x 10 –4/s at 40oC. If the initial gas concentration = 4.80 x 10 –2 mol/L, what is the concentration (M) after 250 seconds have passed?
For the first-order reaction, 2 N2O(g) ? 2 N2(g) + O2(g), what is the concentration of...
For the first-order reaction, 2 N2O(g) ? 2 N2(g) + O2(g), what is the concentration of N2O after 3 half-lives if 0.15 mol of N2O is initially placed into in a 1.00-L reaction vessel?
Referen The initial concentration of the reactant in a first-order reaction A → products is 0.528...
Referen The initial concentration of the reactant in a first-order reaction A → products is 0.528 mol/L and the half-life is 27.0 s. (a) Calculate the concentration of the reactant (in mol/L) 54.0 s after initiation of the reaction. moll (b) How long (in s) would it take for the concentration of the reactant to drop to one eighth its initial value? (e) How long (ins) would it take for the concentration of the reactant to drop to 0.0330 mol/L?...
10. (4 pts) The reaction: SO2Cl2(g)- SO2(g ) + Cl (g) is first order with respect...
10. (4 pts) The reaction: SO2Cl2(g)- SO2(g ) + Cl (g) is first order with respect to SO,Cl2. This reaction was run at a temperature at which the rate constant was 1.3 x 10 /s. In an experiment, a sample of SO;Cl2 at a concentration of 0.03 1 6 mol/L was allowed to decompose by the reaction above. What was the concentration of SO2CI 5.75 hours after the start of the reaction? A) 0.002 mol/L B) 0.014 mol/L C) 0.024...
6. The first-order decomposition of H:O2 at -30 °C occurs with a rate constant of 0.0165...
6. The first-order decomposition of H:O2 at -30 °C occurs with a rate constant of 0.0165 s. If we start the reaction with10.0 mol/L H:0 1) What is the rate half-life, ty2 of the reaction? 2) What will be the residual concentration of H O, after 5 minutes? 3) What will be the initial reaction rate and the reaction rate at 5 minute? 4) How long will it take for the concentration of H 02 to decrease to 2.5mo/L?
Back to main menu Exercise 1 The reaction N O4(g) 2NO2(g) has first-order kinetics and a...
Back to main menu Exercise 1 The reaction N O4(g) 2NO2(g) has first-order kinetics and a rate law constant of 1.06x10-5 l/s at 298 K. (a) If the initial concentration of N20 is 3.40x10-5M and no NO2 is present at the beginning of the reaction, what is the concentration of NO2 after 1000s? (b) How long will it take for 90% of N2O, to react away? Express the time in days, hours and minutes. Rark to main menu
25. The rate constant of a first-order decomposition reaction is 0.0267 s-l. If the initial concentration of reactant is 0.198 M, what is the concentration of reactant after 30.0 seconds? 26 Hydrogen perovide dome
Q-4 (7.10). The concentration of a reactant in a first-order chemical reaction that proceeds at a rate k can be described as follows: In(C) = ln(Co) - kt, where C is the concentration of the reactant at time t, Co is the initial concentration and t is the elapsed time since the reaction started. Consider an initial concentration of Co = 0.3 mol/L. The experiment was repeated n times to give a geometric mean of the concentration at time t...
The reaction NO(g) + 7/2 Cl_2(g) rightarrow NOCl(g) is first-order in [Cl2] and second order with respect to [NO]. Under a given set of conditions, the initial rate of this reaction is 6.20 times 10^-6 mol/L s. What is the rate of this reaction if the concentration of NO is doubled and the concentration of Cl_2 is reduced to half the original value? 6.20 times 10^-6 mol/L s 2.48 X 10_5 mol/L s 1.24 times 10^-5 mol/L s 4.96 times...
Referen The initial concentration of the reactant in a first-order reaction A → products is 0.528 mol/L and the half-life is 27.0 s. (a) Calculate the concentration of the reactant (in mol/L) 54.0 s after initiation of the reaction. moll (b) How long (in s) would it take for the concentration of the reactant to drop to one eighth its initial value? (e) How long (ins) would it take for the concentration of the reactant to drop to 0.0330 mol/L?...
10. (4 pts) The reaction: SO2Cl2(g)- SO2(g ) + Cl (g) is first order with respect to SO,Cl2. This reaction was run at a temperature at which the rate constant was 1.3 x 10 /s. In an experiment, a sample of SO;Cl2 at a concentration of 0.03 1 6 mol/L was allowed to decompose by the reaction above. What was the concentration of SO2CI 5.75 hours after the start of the reaction? A) 0.002 mol/L B) 0.014 mol/L C) 0.024...
6. The first-order decomposition of H:O2 at -30 °C occurs with a rate constant of 0.0165 s. If we start the reaction with10.0 mol/L H:0 1) What is the rate half-life, ty2 of the reaction? 2) What will be the residual concentration of H O, after 5 minutes? 3) What will be the initial reaction rate and the reaction rate at 5 minute? 4) How long will it take for the concentration of H 02 to decrease to 2.5mo/L?
Back to main menu Exercise 1 The reaction N O4(g) 2NO2(g) has first-order kinetics and a rate law constant of 1.06x10-5 l/s at 298 K. (a) If the initial concentration of N20 is 3.40x10-5M and no NO2 is present at the beginning of the reaction, what is the concentration of NO2 after 1000s? (b) How long will it take for 90% of N2O, to react away? Express the time in days, hours and minutes. Rark to main menu
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