If the [S2O32-] is initially 2.49 x 10-4 M, and the reaction takes 129 seconds for the solution to turn blue, what is the rate of the reaction expressed in terms of I2?

Q: What is the rate expression for the following reaction ? aA + bB → gG + hH

A: Given:- aA + bB → gG + hH  To write :- rate expression for the given reaction  according to the rate…

Q: H,O2 (aq) + 2I + 21", (аg) (ад) 2H¿0 » +I2 aq)

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Q: How long will it take for the concentration of A to decrease from 1.25 M to 0.357 for the second…

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Q: D. Calculate the activation energy (E_) for the reaction assuming that the frequency factor (A) 1.…

A: The answer is as follows:

Q: H + KOH + KI + H. H

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Q: A4 (ag) + 2B2 (aq) 4 AB (aq) The initial rate of appearance of AB was 4.4 M/s. What is the general…

A: Reaction rate:

Q: d. The activation energy of the reaction is 85 kJ/mol. Calculate the time required for [A2] to go…

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Q: (d) What is the value of the activation energy of this reaction, expressed in kilojoules? i kJ/mol…

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Q: activation energy

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Q: Reaction E. (kJ) 70 128 285 d) Which reaction has the smallest half-life? e) Which reaction has the…

A: Chemical kinetics is the branch of chemistry that mainly deals with the rate of reaction and change…

Q: Based on the information for the reaction of N2O5e) --> 2 NO21g) + 1/2 O212) obtained in the…

A: The Arrhenius equation in form of straight line is: ln(k) = -EaR*1T+ln(A) If we compare this to the…

Q: In the presence of excess thiocyanate ion, SCN, the following reaction is first order in…

A: (a) For the first order reaction half life is given as,                      t1/2 = 0.693/K where,…

Q: The half life for a first order reaction is 45 min. What is the rate constant in units of s? Multple…

A: Note : Half life (t 1/2) = 0.693 / K . See below.

Q: Bromate(V) ions react with bromide ions in acidic söl form bromine. Bro, (aq) + 5Br"(aq) + 6H*(aq) →…

A: Given : We have to predict order with respect to each reactant and methods to determine the rate of…

Q: Calculate rate constant k in h-1 for a first order reaction with a half-life of 55 hours.

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Q: Write the mechanism of all of the following reactions. (1) -MgBr HCN -CHO (2) H, NH2 + H20 CH,O OCH,…

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Q: The rate of formation of D for the reaction 3A(g) + B(g) +2C(g) – D[g) + 2E(g) is k[A] [B]*. If the…

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Q: b Calculate the rate of the reaction when [N2O5] is 1.0 M.

A: Given,  [N2O5] = 1M  Rate law , Rate = 6.2×10-⁴[N2O5]

Q: A B [Alo [B](f) [A](1) t Time Concentration

A: In this question, First we will explain the figure and then we will discuss about the rate of…

Q: Metals often form several cations with different charges. Cerium, for example, forms Ce³+ and Ce4+…

A: Rate law :-  The dependency of rate of a chemical reaction on concentration of the reactants is…

Q: Using the method of Initial rates calculate the reaction order for KIO3.

A: To determine the order of the reaction for KIO3 using the initial rates method.  The initial rate…

Q: Calculate the activation energy, Ea, in kJ/mol for the reaction N2O5(g) → 2 NO2(g) + 1/2 O2(g)…

A: Given,  rate constant k1 (at 25 ºC) = 3.46 x 10-5 s-1 and k2 (at 50 ºC) = 1.10 x 10-3 s-1 T1 = 298 K…

Q: The rate constant, k, is 0.090 h−1 for the reaction   and the rate equation is   Calculate the…

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Q: The reaction A→B is second order and has a rate constant k = 0.0136 M-1 s-1.

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Q: What is the difference between order of reaction and molecularity ?

A: Chemical kinetics is the branch of chemistry that mainly deals with the rate of reaction and change…

Q: In the presence of excess thiocyanate ion, SCN-1, the following reaction is first-order in…

A: Given- Rate constant K = 2.8 x 10-6 /s Reaction is first order To find- Half life of reaction-…

Q: 5. For a reaction: aA → Products, [A]o = 6.0 M, and the first two half-lives are 56 and 28 minutes,…

A: According to question, Ist half live is 56 min and 2nd half live is just half of 56 that is 28 min…

Q: Using the data from the following table, determine the activation energy (E.) of the reaction…

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Q: The rate constant for the decomposition of a given ore is 0.0475 s-1. (a) what is the half-life of…

A: The rate constant of decomposition of the given ore is = 0.0475 s-1 The unit of the rate constant…

Q: (3) What effect does a catalyst (e.g. Manganese (II) chloride) have upon the rate of reaction?

A: As shown in the Lab report, upon adding catalyst the time of the reaction decreases to 0.5 min. Thus…

Q: Reaction A В C Ea (kJ) 70 128 285 a) Which reaction is the fastest? b) Which reaction is the…

A: Since you have posted question with multiple sub-parts, we are entitled to answer the first 3 only.…

Q: Given the following balanced equation, determine the rate of reaction with respect to [H2]. N218) +…

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Q: If a reaction performed at 300 K doubles its rate when the temperature is increased to 310 K, what…

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Q: Consider the following reactions: N218) + O2(8) + O2{8) CaCO3(s) + 2H* (aq) → 2NO(8) → 2MGO(s) > Ca"…

A: when the solids are present in the reactants that affects the rate of reaction  so only 2 and 3…

Q: In the presence of excess thiocyanate ion, SCN-, the following  reaction is first order in…

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Q: 2A → B + 2C The rate constant od the reaction is 2.17 x 10$ s'. (a) Calculate the fraction of A…

A: We have to calculate fraction of A remaining and also time when concentration left is 50%.

Q: The rate constant of a certain reaction is known to obey the Arrhenius equation, and to have an…

A: log K2/K1 = Ea /2.303R [ T2-T1/T1T2] Arrhenius equation

Q: NH₂ SDS, NaHCO H₂O

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Q: 5. If0.020 M KI was used instead of 0.010 M KI, how would this effect: a. the rate of the reaction?…

A: The question is based on the concept of chemical kinetics. We have to determine the effect of change…

Q: If the half-life of a 1st order reaction is 67 minutes, k=

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Q: 3. For the reaction 2A + 3B Mol/L/s, what would be the rate of AD? 4C + 5D, if the rate of the…

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Q: b Calculate the rate of the reaction when N2O5 is 1.0 M.

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Q: 4. Determine the order of the following reactions from the rate constant. a. k= 1.3 x 104 s-1 b. k =…

A: By unit of rate constant ,order of reaction can be determined. Rate constant represent the relation…

Q: The first-order reaction A→ B has k = 1.25 s-1. If [A]o = 0.450 M, how long will it take %3D [A] =…

A: Given  values are, Order of reaction =1  k= 1.25 s-1  [A]0 = 0.450 M [A] = 0.102 M Time t =?

Q: Enter your answer in the provided box. The rate constant for the following second-order reaction is…

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Q: a. Write out the mechanism for this reaction. b. Which step is the rate determining step (R.D.S.)?…

A: Rate determining step is sllowest step in the reaction . Intermidiates do not involve in the overall…

Q: The half-life period of two samples are 0.1 and 0.4 seconds. Their initialConcentrations are 200 and…

A: The amount of time required by a sample to reduce its initial concentration by half is termed as…

Q: CO,Me OSIME, CO,Me Br A Br

A: Concept ; (3,3) sigmatropic reaction or rearrangement.  In this reaction the sigma bond between the…