A laboratory manager performed an experiment to investigate the hydrolysis of 2-chlorooctane at different temperatures. The following results were obtained: Temperature (°C) Rate constant, k, (s-1) 1.06 x 10-5 3.19 x 10-4 9.86 x 10-4 2.92 x 10-3 25 35 45 Using a graphical method, calculate (i) the activation energy
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- The first order isomerization of cyclopropane has an activation energy of 2.64e5 J/mol and a rate constant of 1.10e-4 s-1 at 743 K. What is the rate constant at 759. K? 4.53e-5 s-1 2.67e-4 s-1 1.20e-4 s-1 1.76e-1 s-1 Please explain, Thank you!The activation energy for the gas phase isomerization of cyclobutene is 136 kJ.(CH2)2(CH)2CH2=CHCH=CH2The rate constant at 429 K is 3.24×10-4 /s. The rate constant will be /s at 469 K.The second-order rate constants for the reaction of oxygen atoms ·with aromatic hydrocarbons have been measured (R. Atkinson and J.N . Pitts, J. Phys. Chem. 79, 295 (1975)). In the reaction with benzene the rate constants are 1.44x 107dm' mor ' s ' at 300.3 K, 3.03 x 107 dm' mol"'s"' at 34 1.2K, and 6.9 x 107 dm' mor's ' at 392.2K. Find the frequency factor and activation energy of the reaction.
- At 147oC, the initial rate of the gas-phase decomposition of 1,1-dimethyl peroxide (DMP) depends on the initial concentration of DMP: [DMP], mol dm-3 0.0200 0.0625 0.1720 0.520 Rate (-d[DMP]/dt), mol dm-3 s-1 2.0 x 10-6 8.75 x10-6 2.40 x10-5 7.2 x10-5 From the data, establish that the reaction is first order, and calculate the rate constant at 147oC. [138421] The answer is in the bracket, thank you!The enzyme-catalyzed conversion of a substrate has a Michaelis constant of 0.032 mole dm-3. The rate of the reaction is 0.000205 mole dm-3 sec-1 when the substrate concentration is 0.875 mole dm-3. What is the maximum velocity of this reaction?In aqueous solution buffered at a pH of 6.75 Penicillin G (molecular weight of 334.39 g/mole) undergoes hydrolysis via a pseudo first order reaction that has an activation energy of 77.3 kJ/mole and a pseudo first order rate constant of 1.58 x 10-7 s-1 at 30°C. The solubility of the sodium salt of Penicillin G is 25 mg/ml of water. One would expect the solubility of the sodium salt to be ____________ that of the Penicillin G. a. higher than b. the same as c. lower than
- In aqueous solution buffered at a pH of 6.75 Penicillin G (molecular weight of 334.39 g/mole) undergoes hydrolysis via a pseudo first order reaction that has an activation energy of 77.3 kJ/mole and a pseudo first order rate constant of 1.58 x 10-7 s-1 at 30°C. The solubility of the sodium salt of Penicillin G is 25 mg/ml of water. A solution containing the sodium salt of Penicillin G is determined to have a concentration of 1.25 x 10-3 M. The solution is… a. unsaturated b. saturated c. supersaturatedFor a certain alkane the activation energies for the rate determining step of fluorination and chlorination are 8.0 kJ/mole and 20 kJ/mole, respectively. Calculate the ratio of the rate of fluorination to that of chlorination at 27oC assuming that the values of A (Arrhenius constant) are the same. (R=8.314 J/mol-K)The conversion of dissolved carbon dioxide in blood to HCO3- and H3O+ is catalyzed by the enzyme carbonic anhydrase. The Michaelis–Menten constants for this enzyme and substrate are Km = 8 × 10-5 mol L-1 andk2=6 × 105 s-1. (a) What is the maximum rate of reaction of carbon dioxide if the enzyme concentration is 5 × 10-6 M?(b) At what CO2 concentration will the rate of decomposition be 30% of that calculated in part (a)?
- 1) Ethane dissociates into methyl radicals at 700.OC with a rate constant of 5.50x10-4s-1. If the activation energy is 384kJ/mol, what would be the rate constant at 870.OC?Describe the reaction mechanism for the hydrolysis of 2-bromo-2-methylpropane [CH3C(CH3)2Br] with aqueous hydroxide ions (OH-).The description should be detailed and must include the type of bond fission that takes place. You may sketch and insert suitable diagrams to aid your description if you wishThe hydrolysis of a substance is specifically catalyzed by hydrogen ions, and the rate constant is given by the equation: k/dm^3 mol^-1 s^-1 = 4.7 x 10^-2([H+]/mol din^-3) When the substance was dissolved in a 10^-3 M solution of an acid, HA, the rate constant was 3.2 x 10^-5- dm^3 mol^-1 s^-1. What is the dissociation Constant of HA?