For a reaction aA -> Products, [A]0 = 4.2 M, and the first two half-lives are 56 and 28 minutes, respectively. Calcualte k (without units).

Q: The half-life for the first-order decomposition of N2O4 is 1.3 x 10^-5 s. N2O4 (g) yields 2NO2 (g).…

A: • N2O4(g) ⇌ 2NO2(g)It follow first order kineticsrate = KN2O41By solvingK = 2.303t log AoAty2  =…

Q: How many half-lives are required for the concentration of reactant to decrease to 1.56% of its…

A: Given data ;  Concentration is decreased to 1.56 %. It means that 0.0156 of [A0] is decomposed.…

Q: The rate of formation of dichromate, Cr 2 O 7 2- , ions is 0.14 M s -1 in the reaction 2CrO 4 2- (…

A: A unique rate is a rate of appearance or consumption of any of the species in a reaction divided by…

Q: Determine the half life of a reaction with rate constant, k= 0.00504 M/s if the initial…

A: We have initial concentration as 0.321 M, and rate constant value as 0.00504 M/s  . We have to…

Q: The 1st order rate constant for the decomposition of N,Os to NO, and O, at 70 °C is 6.82 x 10-3 s1,…

A: Chemical Kinetics is the branch of chemistry that deals with the rate of the chemical reaction. like…

Q: (6) 2. The half-life for a reaction is 726 s. Starting with a concentration of 0.6000 M, how long…

A: We have given that  The half-life for a reaction is 726 s. Starting with a concentration of 0.6000…

Q: A certain reaction has an activation energy of 52.53 kJ/mol. At what Kelvin temperature will the…

A: Given K2 = 5 K1

Q: Rate constant k for a first order reaction has been found to be 2.54 × 10-3 sec-1. Calculate its…

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Q: The following reaction has a rate constant of 0.0175M¯'s A2 (g) – > 2A (g) at 298 K. c. Calculate…

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Q: A reaction has a rate constant of 0.00205 s–1. What is the half-life (in min to two decimal places)…

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Q: The rate constant for a reaction of zero order in A is 0.0030 mol L-1 s-1. How long will it take for…

A: Zero order reaction is that in which rate of reaction is constant and don't depend on concentration…

Q: 5a) A certain reaction is completed 20% in 12.6 min at 300 K and in 3.20 min at 340 K. Calculate its…

A: "Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: How many half-lives are required for the concentration of reactant to decrease to 12.5% of its…

A: Given,

Q: For the reaction of reactant A convert to products, successive half-lives are observed to be…

A: Half-life in this context is defined as the time needed to observe the halving of the original…

Q: A reactions rate constant (k) was measured at several different temperatures (T). A graph of ln K vs…

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Q: The first three half-lives of a chemical reaction are as follows: 44min, 22 min, 11min. What is the…

A: Below attached file showing the details answer.  All the best .

Q: A reaction has a rate constant of k = 2.55 s¹. What is the overall reaction order? S

A: Given : for a reaction the value of rate constant (K) = 2.55 s-1  To determine : overall reaction…

Q: How many half-lives are required for the concentration of reactant to decrease to 25% of its…

A: Given:Let the initial concentration be=N∘Final concentration= 25% of initial…

Q: A reaction has a constant half-life of 250 s. How long will it take for the reactant concentration…

A: Given: Reaction is having a constant half-life of 250 s. And to find the time required for the…

Q: A reaction of 0.066 M of A is heated at 800°C for 2.21 hours. Calculate the half-life of the…

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Q: Dinitrogen pentoxide decomposes in the gas phase to form nitrogen dioxide and oxygen gas. The…

A: Given information: The half-life of first order reaction is 2.81 h The volume of the reaction vessel…

Q: for the reaction 3A=B+2C the rate of change of B is 0.125M/s. What is the corresponding rate of…

A: Given reaction:  3A ----->  B  + 2C Given rate change of B, dB/dt  =  0.125 M/s Rate change of A,…

Q: (8) For the second order reaction 2A →B + C with a rate constant of 1.2 x 10² L/mol s, Calculate the…

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Q: A certain reaction has an activation energy of 70.0 kJ/mol and a frequency factor of A1= 2.50×1012…

A: Use Arrhenius equation to find the rate constant k of the reaction.

Q: For the hypothetical second-order reaction A → products, k = 0.388 M–1 s–1. If the initial…

A: Given that the reaction follows a second order and the rate equation is,

Q: A certain reaction has an activation energy of 39.57 kJ/mol. At what Kelvin temperature will the…

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Q: Determine the activation energy, Ea, (in kJ/mol) of the decomposition reaction, CH3CHO → CH4 + CO. k…

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Q: For a reaction: , [A]0 = 4.2 M, and the first two half-lives are 56 and 28 minutes, respectively.…

A: Given : [A]0 = 4.2 M First half life of reaction = 56 min. And second half life = 28 mins.

Q: A reaction: A ➔ 2B starts out with an initial concentration of A at 1.0M and ends with a…

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Q: The rate for the reaction OH (aq) + NH¨ (aq) → H¿0(€) + NH3 (aq) is first order in both OH¯ and NH,…

A: First order reactions are those in which the sum of powers of the concentration of reactants will be…

Q: For a certain reaction. The rate constant doubles when the temperature increases from 15 to 25 ⁰C…

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Q: The reactions in the table are all zero order and follow the same general reaction process of A…

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Q: The rate constant for a first-order reaction is 1.4 × 10-2 s-1 at 646 K and 3.5 × 10-2 s-1 at 824 K.…

A: The relationship between rate constant k , activation energy Ea and temperature T is given by…

Q: The reactions in the table are all zero order and follow the same general reaction process of A…

A: We have to calculate the unknown for each reaction.

Q: The rate constant for the reaction 3A → 4B is 6.00 × 10-3 L mol-1min-1. How long will it take the…

A: Given, that the rate constant for the reaction is 6.00 * 10-3 L.mol-1.min-1.  From the unit of rate…

Q: For the reaction A → products, successive half-lives are observed to be 10.0, 20.0, and 40.0 min for…

A: For the reaction A → products, successive half-lives are observed to be 10.0, 20.0, and 40.0 min for…

Q: A decomposition reaction has a rate constant of 0.0012 y -1. How long does it take for [reactant] to…

A: Since the units of rate constant is in time-1  hence the reaction is first order as the units of…

Q: What is the half-life for a first order reaction if the initial concentration of reactant is 1.25M…

A: Given that it is a first-order reaction. Initial concentration [Co]= 1.25M Final concentration[C] =…

Q: half-life

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Q: Consider the following elementary step X+ 2Y – XY, If the initial rate of formation of XY, is 0.0050…

A: Since the reaction given is elementary. Hence the order of reaction with respect to reactants =…

Q: The hypochlorite ion oxidizes the iodide ion in aqueous solution as represented by the following…

A: The overall reaction order is determined by summing up the exponents of the components mentioned in…

Q: The rate constant for a given reaction is k = 0.312 M1s1. If the initial concentration of reactant…

A: Given,  Rate constant, k = 0.321 M-1s-1  Initial concentration, [A]0 = 1.00 M  According to the…

Q: The rate law for the reaction 2NOB1(g) 2NO(g) + Br,(g) at some temperature is A[NOBI] Rate = K[NOB1]…

A: We have given that  a) t1/2 =  2 s {NOBr]0 = 0.9 M  k = ?  b) [NOBr]t = 0.1 M  t = ?

Q: A particular reaction has an activation energy, Ea, of 189 kJ/mol.  If the rate constant for the…

A: The Arrhenius equation establishes the relationship between activation energy (Ea), rate constants…

Q: The rate constant for this first-order reaction is 0.0130 s at 400 "C. A- products After how many…

A: Given: Rate constant=0.0130s-1 percentage of the reactant=11.3% To find: Time=?

Q: first

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