A first-order reaction has a rate constant of 3.51 ´ 10-3 s -1. The time required for the reaction to be 63% complete is?
A first-order reaction has a rate constant of 3.51 ´ 10-3 s -1. The time required...
A first-order reaction has a rate constant of 7.5 × 10-3/s. The time required for the reaction to be 60% complete is 3.8 × 10-3 s 6.9 × 10-3 s 68 s 120 s 130 s
A first order reaction has a rate constant of 1.85*10^3 s^-1 at 25 C. The rate constant for this same reaction is 4.14*10^4 s^-1 at 100 C. What is the activation energy for this reaction
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?
A certain first-order reaction (A products) has a rate constant of 5.40 10-3 s I 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? at 27 °C A certain second-order reaction (B-products) has a rate constant of 1.05x10-3 M 1.s and an initial half-life of 266 s What is the concentration of the reactant B after one half-life?
If a first-order reaction has a rate constant of 2.11 x 10-1 s-1 at a temperature of 22.3°C, what would the value of k be if the reaction temperature has changed to 43.4 °C given the activation energy is 52.9 kJ/mol?
A certain first-order reaction (A→products) has a rate constant of 5.70×10−3 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?
A certain first-order reaction (A?products) has a rate constant of 5.70×10?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 A) A certain first-order reaction has a rate constant of 2.40×10−2 s−1 at 25 ∘C. What is the value of k at 60 ∘C if Ea = 74.0 kJ/mol ? Express your answer using two significant figures. Part B) Another first-order reaction also has a rate constant of 2.40×10−2 s−1 at 25 ∘C. What is the value of k at 60 ∘C if Ea = 135 kJ/mol ? Express your answer using two significant figures.
A certain first-order reaction has a rate constant k = 3.21 X 10-2 s-1 at 20oC. What is the value of the rate constant at 100oC if Ea = 81.5 kJ/mol? (R = 8.314 J/mol K) Write your answer using 3 significant figures.
A first-order reaction A⟶BA⟶B has the rate constant k=k= 2.8×10−3 s−1s−1 . If the initial concentration of AA is 1.5×10−2 MM, what is the rate of the reaction at t=t= 690 ss ? Express your answer to two significant figures and include the appropriate units.