Part A:
The rate constant for a certain reaction is k = 1.90×10−3 s−1 . If the initial reactant concentration was 0.150 M, what will the concentration be after 7.00 minutes?
Part B:
A zero-order reaction has a constant rate of 4.60×10−4 M/s. If after 30.0 seconds the concentration has dropped to 8.00×10−2 M, what was the initial concentration?
Part C:
A certain reaction has an activation energy of 60.0 kJ/mol and a frequency factor of A1 = 7.80×1012 M−1s−1 . What is the rate constant, k, of this reaction at 26.0 ∘C ?
Part D:
An unknown reaction was observed, and the following data were collected:
T (K) |
k (M−1⋅s−1) |
352 | 109 |
426 | 185 |
Determine the activation energy for this reaction.
Part A: The rate constant for a certain reaction is k = 1.90×10−3 s−1 . If...
Part A The rate constant for a certain reaction is k = 6.30×10−3 s−1 . If the initial reactant concentration was 0.150 M, what will the concentration be after 9.00 minutes? Express your answer with the appropriate units. Part B A zero-order reaction has a constant rate of 4.90×10−4 M/s. If after 60.0 seconds the concentration has dropped to 2.50×10−2 M, what was the initial concentration? Express your answer with the appropriate units.
Part A.The rate constant for a certain reaction is k = 7.90×10−3 s−1 . If the initial reactant concentration was 0.250 M, what will the concentration be after 18.0 minutes? Part B A zero-order reaction has a constant rate of 4.10×10−4 M/s. If after 60.0 seconds the concentration has dropped to 7.50×10−2 M, what was the initial concentration?
Part A A certain reaction has an activation energy of 67.0 kJ/mol and a frequency factor of A1 = 1.40×1012 M−1s−1 . What is the rate constant, k, of this reaction at 28.0 ∘C ? Express your answer with the appropriate units. Indicate the multiplication of units explicitly either with a multiplication dot (asterisk) or a dash. k = Part B An unknown reaction was observed, and the following data were collected: T (K) k (M−1⋅s−1) 352 109 426 185...
1. Part: A The rate constant for a certain reaction is k = 6.00×10−3 s−1. If the initial reactant concentration was 0.550 M, what will the concentration be after 10.0 minutes? Part B: A zero-order reaction has a constant rate of 1.80×10−4M/s. If after 75.0 seconds the concentration has dropped to 7.50×10−2M, what was the initial concentration? 2. At 500 ∘C, cyclopropane (C3H6) rearranges to propane (CH3−CH=CH2). The reaction is first order, and the rate constant is 6.7×10−4s−1. If the...
Part A: The rate constant for a certain reaction is k = 2.30×10−3 s−1 . If the initial reactant concentration was 0.450 M, what will the concentration be after 3.00 minutes? Part B: A zero-order reaction has a constant rate of 4.10×10−4 M/s. If after 35.0 seconds the concentration has dropped to 5.50×10−2 M, what was the initial concentration? Express your answer with the appropriate units.
A. The rate constant for a certain reaction is k = 1.70×10−3 s−1 . If the initial reactant concentration was 0.650 M, what will the concentration be after 18.0 minutes? B. A zero-order reaction has a constant rate of 4.20×10−4M/s. If after 70.0 seconds the concentration has dropped to 1.50×10−2M, what was the initial concentration?
Part A. A certain first-order reaction (A→products) has a rate constant of 3.90×10−3 s−1 at 45 ∘C. How many minutes does it take for the concentration of the reactant, [A], to drop to 6.25% of the original concentration? Part B. A certain second-order reaction (B→products) has a rate constant of 1.90×10−3 M−1⋅s−1 at 27 ∘C and an initial half-life of 298 s . What is the concentration of the reactant B after one half-life?
The rate constant for a certain reaction is k = 1.70×10−3 s−1 . If the initial reactant concentration was 0.900 M, what will the concentration be after 6.00 minutes? [A]t= B) A zero-order reaction has a constant rate of 3.90×10−4 M/s. If after 65.0 seconds the concentration has dropped to 4.00×10−2 M, what was the initial concentration? [A]0=
8) A)The rate constant for a certain reaction is k = 5.80×10−3 s−1 . If the initial reactant concentration was 0.550 M, what will the concentration be after 13.0 minutes? B) A zero-order reaction has a constant rate of 3.40×10−4M/s. If after 35.0 seconds the concentration has dropped to 6.50×10−2M, what was the initial concentration?
The rate constant for a certain reaction is k = 9.00 times 10^-3 s^-1. If the initial reactant concentration was 0 800 M, what will the concentration be after 4 00 m minutes? Express your answer with the appropriate units A zero order reaction has a constant rate of 2.10 times 10^-4 M/s. If after 65.0 seconds the concentrator has dropped to 2.00 times 10^-2 M, what was the initial concentration?