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any help would be appreciated. A first-order chemical reaction is observed to have a rate constant...
A chemical reaction that is first order in X is observed to have a rate constant of 2.3 x 10-25-1. If the initial concentration of X is 1.0 M, what is the concentration of X after 210 s? 0.52M 130 M 0.17M 0.0080 M 0.99 M
For a first-order reaction, the half-life is constant. It depends only on the rate constant k k and not on the reactant concentration. It is expressed as t1/2=0.693k t 1 / 2 = 0.693 k For a second-order reaction, the half-life depends on the rate constant and the concentration of the reactant and so is expressed as t1/2=1k[A]0. A certain first-order reaction (A→products A → p r o d u c t s ) has a rate constant of 9.30×10−3...
A first-order chemical reaction is observed to have a particular reaction rate at 20°C. If its activation energy is 27.5 kJ/mol, how much of an increase in temperature (in °C) would be necessary in order to triple the reaction rate.
2. A first-order chemical reaction is observed to have a particular reaction rate at 20°C. If its activation energy is 27.5 kJ/mol, how much of an increase in temperature in °C) would be necessary in order to triple the reaction rate.
2. Answer the following questions by connecting the half-life of each first-order reaction to the rate constant. a. The rate constant of a first-order reaction is 2.43 × 10–2 min–1. What is the half-life of the reaction? (2 points) b. A first-order reaction has a rate constant of 0.547 min-1. How long will it take a reactant concentration 0.14 M to decrease to 0.07 M? (2 points) c. The half-life of a first-order reaction is 5.47 min. What is the...
3(12) The first-order reaction, 2N2O(g) + 2N2(g) + O2(g), has a rate constant of 0.76 s at 1000K. (a) Calculate the half-life of this reaction at 1000K. (b) How long will it take for the concentration of N20 to fall to 25% of its initial value at 1000K (c) How long will it take for reaction to be 90% complete? (d) If the half-life of the same reaction is 29 min at 800K, what is the rate constant at 800K?...
A chemical reaction of the general type: A → 2B is first-order, with a rate constant of 1.52 × 10-4 s-1. a) Calculate the half-life of A. b) Assuming the initial concentration of A is 0.067 mol L-1, calculate the time needed for the concentration to fall to 0.010 mol L-1.
The rate constant for the first-order decomposition of a compound A in the reaction 2A rightarrow P is k = 3.6 times 10^-7 s^-1 at 25 degree C. What is the half-life of A? What will be the pressure, initially 33 kPa, at 50s, 20 min after initiation of the reaction?
any problem(s) between 13 and 17 LES 3.00 x 13. The reaction. A + B is a first order reaction. At 760 K, 85% of a sample of A changes to B in 79.0 min. Calculate the value of the rate constant. (A) 6.10 x 10* s (B) 1.73 x 10-51 (D) 3.43 x 10' 51 (E) 4.00 x 10-2 C) 4.03 x 10251 14. A first-order reaction has a rate constant of 3.0 x 10''. The time required for...
In a chemical reaction that has first order kinetics, which is true at a constant temperature? A. Half Life and k are both constant B. Neither Half Life nor k is constant C. Half life is constant, but k changes D. Half life changes. but k is constant