The rate constant for the reaction CH;Br + Cl- CH;CI + Br¯ in acetone is 5.9 × 10-3 L mol¬1 s-1. Is this reaction diffusion-controlled or limited by a large activa- tion energy?
Q: 1. The reaction (CH3)3CBr + OH → (CH3)COH + Br in a certain solvent is first order with respect to…
A:
Q: Use the collision theory of gas-phase reactions to calculate the theoretical value of the…
A:
Q: Consider the reaction A+ BP A temperature-jump experiment is performed where the relaxation time is…
A:
Q: 2. Derive an expression for the time dependence of the degree of polymerization for the stepwise…
A:
Q: A given reaction H3COH + H* + Br → H3CBr + H2O has the following proposed mechanism step 1: H3COH +…
A:
Q: The rate constant k1 = 3.52 x 10^-7 L/mol a at 555K. The Ea = 186 kJ/mol. What is the rate constant…
A: Arrhenius equation: Arrhenius equation give the relationship between the activation energy and the…
Q: The activation energy for the decomposit ion of benzene diazon ium chloride is 99.1 kJ mol-1. At…
A: The activation energy at 25˚C is 99.1 kJ/mol. Let k1 is the rate constant at 25˚C and k2 at T2. The…
Q: Conventional equilibrium considerations do not apply when a reaction is driven by light absorption…
A:
Q: Derive the integrated form of a third-order rate law v = kr[A]2[B] in which the stoichiometry is 2 A…
A:
Q: The frequency factor for a second-order gas-phase decomposition of a species at low pressures is 2.3…
A: According to Arrhenius equation, the relation between rate constant k, activation energy Ea, and…
Q: 3. The rate constant of the reaction B* + C à Products is sensitive to the ionic strength of the…
A: The substance that is dissolved in the appropriate volume of the solvent to furnish the solution is…
Q: For the gas-phase reaction A + A → A2, the experimental rate constant, kr, has been fitted to the…
A: In the present case, a gas-phase reaction is taking place between two species labelled as ‘A’…
Q: Why may some gas-phase reactions show fi rst-order kinetics?
A: In chemical kinetics, the order of the reaction is 1 when the speed of the reaction depends upon…
Q: What is the best way to ascertain that a reaction is first order?
A: if it the reaction is a first-order reaction, plot the natural logarithm of a reactant concentration…
Q: The rate constant for the reaction H* + HS¯ → H,S in aqueous solution is 7.5 × 1010 L mol¯1 s¯'. Is…
A: Diffusion is the transfer of a substance from a higher concentration to lower concentration. When…
Q: Derive the first-order reaction kinetics of a D species, starting from Cp, to Cp with initial time…
A:
Q: The effective rate constant for a gaseous reaction which has a Lindemann mechanism is 2.50 x 10-4…
A: Given: Effective rate constant = 2.50*10-4 s-1 at 1.30 kPa Effective rate constant = 2.10*10-5 s-1…
Q: The rate constant for the fi rst-order decomposition of N2O5 in the reaction 2 N2 O5(g) → 4 NO2(g) +…
A: Half life of a first order reaction can be calculated by using the formula :…
Q: a study of the rearrangement of ammonium cyanate to urea in aqueous solution at 50 °C H,NCO(aq)…
A: NH4NCO (aq) ----> (NH2)2CO (aq) Given : 1/[NH4NCO] vs time graph is a straight line with slope =…
Q: Br KOH DMF 2)
A: Nucleophilic substitution reactions are of two types SN1 and SN2. The SN1 reactions are of…
Q: In an experiment on the adsorption of oxygen on tungsten it was found that the same volume of oxygen…
A: Time requiired for adsorption is expressed as:t=t0e(EdRT)..............1stFor two diffrent…
Q: Which of the following represents the integrated rate law for a fırst-order reaction? k = Ae( Ea/RT)…
A:
Q: (d) The first-order rate constants for the fluorescence and phosphorescence of molecule X are 4.5 x…
A: Answer Both fluorescence and phosphorescence are the luminescence. They absorbs photon(light) and…
Q: 10.4. A reaction of stoichiometry A+B=Y+Z is found to be second order in A and zero order in B.…
A: As we know, the rate of reaction is determined by the slow step i.e slow step is Rate Determining…
Q: At 500 K, what is the fraction of molecular collisions with enough energy to result in a bimolecular…
A: The fraction of molecular collision f(E,T) that involves in the bimolecular reaction is calculated…
Q: Give clear handwritten answer- Derive an expression for the time dependence of the degree of…
A: Given that, for a condensation polymerization reaction, the time-dependent rate law is d[M]/dt =…
Q: Q.1 Explain in-short with drawings the method of data interpretation of the followings: a.…
A: A reaction in which one reactant gives two product which further dissociates by two different…
Q: The mechanism of a reaction consists of a pre-equilibrium step with forward and reverse activation…
A: The activation energy of a reaction is the minimum required energy to give the product. In an…
Q: What is the rate equation for the elementary termolecular reaction A + 2B ⟶ products? For 3A ⟶…
A: To find: The rate equation for the given elementary termolecular reaction
Q: (Q3) (c) What are the limitations of Langmuir adsorption isotherm?
A:
Q: For a 1st order parallel reaction at 300 K E -3 Kcal/mole [B] [C] 3 E, 8 Keal/mole Find activation…
A: Introduction : We have to calculate overall activation energy .
Q: What is the value of the rate constant at 298 K?
A: Rate Law: Also known as rate equation that links the initial or forward reaction rate with the…
Q: The rate constant for a reaction is 4.60 xx 10^(-4) at 289.3 K and 3.06 xx 10^(-3) at 356.4 K. What…
A: The question is based on the concept of chemical kinetics. We have to calculate activation energy…
Q: Calculate the magnitude of the diffusion-controlled rate constant at 320 K for the recombination of…
A:
Q: Consider the first-order decomposition of nitramide shown below: NH,NO,(aq) = N,O(g) + H,O(1) The…
A: The given reaction is: NH2NO2(aq)↔N2O(g)+H2O(l) The volume of N2O = 50.0 mL (50.0×10-3 L)…
Q: For a reaction R → P, half-life (t1/2) is observed to be independent of the initial concentration of…
A: The interconnection between the rate of any chemical reaction and the reactant concentration is…
Q: The viscosity of water at 20 oC is 1.0019 mN s m-2 and at 30 oC it is 0. 7982 mN s m-2 What is the…
A:
Q: The activation energy for the decomposition of hydrogen peroxide is 46.00 kJ/mol. When the reaction…
A: Since you have posted multiple questions, we are entitled to answer the first only.
Q: 5. Derive the nth-order reaction kinetics of a B species, starting from CBo to CB with initial time…
A: The reaction order signifies the total of the power terms through which the concentration must be…
Q: (Q3) (a) Derive the Langmuir adsorption isotherm in terms of pressure of a diatomic molecule for the…
A: We have a diatomic molecule A2 (like H2) that is getting adsorbed on a surface according to the…
Q: What is the effective rate constant [in units that combine M and min] for the reaction with rate law…
A: Given-> v = k[A][B]2 k = 0.54 M-2.min-1 Initial concentration of B = 3.7 M Initial concentration…
Q: Express the rate constant k for the overall chemical reaction in terms of k1, k2, and (if necessary)…
A: Answer is given as :
Q: What is the activation energy of a reverse reaction at 679 K if the foward reaction has a rate…
A:
Q: Calculate the magnitude of the diffusion-controlled rate constant at 320 K for the recombination of…
A: Given: Temperature is 320 K. The viscosity of the solution is 0.89 cP. The concentration of the…
Q: In a research paper, (Orkin et al., J. Phys. Chem., 1997, 101: 174) rate constants were determined…
A: Given, (a). Ea = ? (b) A = ?
Q: The reaction between O2 and hemoglobin in aqueous solution has an experimentally determined overall…
A:
Q: In the following table are listed the rate constants for the decomposition of N205 at different…
A:
Q: Derive the integrated form of a third-order rate law v = kr[A] 2 [B] in which the stoichiometry is 2…
A: Introduction: (a) Given Third-order reaction can be written as 2A +B…
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
- Write down the kinetic equation for a simple reaction in a homogeneous medium 2A + B = 2C. Indicate the general and in relati on to all reactants reaction orders1) The rate constant for the gas-phase reaction H2(g) + I2(g) → 2 HI(g) has the value 4.45 x 10-5 mol-1 dm³ s-1. What is the equivalent rate constant in units of molecule-1 cm³ s- 1? 2) The kinetics of the hydrolysis of methyl methanoate, CH3COOCH3, in aqueous solution were investigated by measuring the concentration of the ester after different time intervals. The reaction was found to be first order in the concentration of the ester. Use the data below to determine the rate constant for the reaction (must provide best fit graph). 3600 time, t/s 1800 5400 7200 9000 concentration, c/ (mol dm-3) 0.300 0.191 0.135 0.081 0.055 0.035A rate constant is found to fit the expression k = Ae-(4972 K)/T with A = 4.98 x 1013 dm3mol-1 s-1 near 25 °C. Calculate ΔGǂ for the reaction at 25 °C; assume κ = 1.
- In a study of the gas phase decomposition of hydrogen iodide at 700 K HI(g)V½ H2(g) + ½ I½(g) the concentration of HI was followed as a function of time. It was found that a graph of 1/[HI] versus time in seconds gave a straight line with a slope of 1.72×103 M1s1and a y-intercept of 0.667 M1. Based on this plot, the reaction is order in HI and the rate constant for the reaction is M1s1Manfred Eigen, a German physical chemist working dur- ing the 1970s and 1980s, earned a Nobel Prize for devel- oping the "temperature-jump" method for studying kinetics of very rapid reactions in solution, such as proton transfer. Eigen and his co-workers found that the specific rate of proton transfer from a water molecule to an ammonia molecule in a dilute aqueous solution is k = 2 x 10° s-'. The equilibrium constant Kµ, for the reaction of ammonia with water is 1.8 x 10-8, What, if anything, can be deduced from this information about the rate of transfer of a proton from NH; to a hydroxide ion? Write equations for any reactions you mention, making it clear to which reaction(s) any quoted constant(s) apply.Writing the rate law implied by a simple mechanism Suppose the formation of tert-butanol proceeds by the following mechanism: step elementary reaction rate constant 1 (CH,),CBr(aq) → (CH3),C"(aq) + Br (aq) 2 (CH3),C"(aq) + OH (aq) → (CH3),COH(aq) kz Suppose also k,»k,. That is, the first step is much faster than the second. olo Write the balanced chemical equation for the overall chemical reaction: Write the experimentally- observable rate law for the overall chemical reaction. rate = k I Note: your answer should not contain the concentrations of any intermediates. Express the rate constant k for the overall chemical reaction in terms of k1, k2, and (if necessary) the rate constants k-1 and k.2 for k = the reverse of the two elementary reactions in the mechanism. olo ||
- For the gas phase isomerization of cis-1,2-diphenylethene, cis-C,H;CH=CHC,Htrans-CgH;CH=CHC,Hg the rate constant in s has been determined at several temperatures. When In k is plotted against the reciprocal of the Kelvin temperature, the resulting linear plot has a slope of -2.15×10ʻ K and a y-intercept of 29.4. The value of the rate constant for the gas phase isomerization of cis-1,2-diphenylethene at 590 K i ( (Enter your answer to one significant figure.) Submit Answer Retry Entire Group 9 more group attempts remainingThe frequency factor for a second-order gas-phase decomposition of a species at low pressures is 2.3 × 1013 dm3 mol−1 s−1 and its activation energy is 30.0 kJ mol−1. What are (i) the entropy of activation, (ii) the enthalpy of activation, (iii) the Gibbs energy of activation at 298 K? Assume κ = 1.Suppose that the typical diffusion coefficient for a reactant in aqueous solution at 25 °C is 5.2 × 10−9 m2 s−1. If the critical reaction distance is 0.4 nm, what value is expected for the second-order rate constant for the diffusion-controlled reaction?
- In a study of the conversion of methyl isonitrile to acetonitrile in the gas phase at 250 °CCH3NC(g)CH3CN(g)the concentration of CH3NC was followed as a function of time.It was found that a graph of ln[CH3NC] versus time in seconds gave a straight line with a slope of -4.38×10-3 s-1 and a y-intercept of -2.83 . Based on this plot, the reaction is ______ order in CH3NC and the half life for the reaction is _______ seconds.he equilibrium NH3(aq) + H2O(l) ↔NH4+(aq) + OH−(aq) at 25 °C is subjected to a temperature jump which slightly increases the concentration of NH4+(aq) and OH−(aq). The measured relaxation time is 7.61 ns. The equilibrium constant for the system is 1.78 × 10−5 at 25 °C, and the equilibrium concentration of NH3(aq) is 0.15 mol dm−3. (a) Calculate the rate constant for the forward step. kf,eff = _____________. Just value in 3 sig. fig., normal or exponential format, e.g. type in 1.16E6 meaning 1.16 x 106, must use capital E here. Choose a unit in the next question, must be in one of those. (b) choose a unit for the forward rate constant. no unit s-1 L/mol/s L2/mol2/sSuppose the formation of tert-butanol proceeds by the following mechanism: step elementary reaction rate constant CBr(aq) (CH), С"(аg) + Br (ag) c* k 1 2 (CH3),C"(aq) + OH (aq) → (CH,),COH(aq) k2 3 3 Suppose also k, «k,. That is, the first step is much slower than the second. Write the balanced chemical equation for the overall chemical reaction: Write the experimentally- observable rate law for the overall chemical reaction. rate = k U Note: your answer should not contain the concentrations of any intermediates. Express the rate constant k for the overall chemical reaction in terms of k1, k2, and (if necessary) the rate constants k.1 and k-2 for 0 k = the reverse of the two elementary reactions in the mechanism.
