The H2-O2 reaction to produce H20 may be accounted for by the following mechanism: H2 +02 4 20H H2 + OH H20 + H H + 02 → OH +0 k4 На +0 + он +H H+ OH + M H20 + M 1. Using the steady state assumption, derive the differential equations expressing
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- The following experimental data were collected during a study of the catalytic activity of an intestinalpeptidase with the substrate glycylglycine: Glycylglycine + H2O → 2 glycine [S] (mM) Rate of product formation (mol/min) 1.5 0.21 2.0 0.24 3.0 0.28 4.0 0.33 8.0 0.40 16.0 0.45 Use the graphical analysis (Lineweaver-Burk plot and equation) to determine the Km and Vmax for this enzyme preparation and substrate.In a study of the catalytic properties of a titanium surface it was necessary to maintain the surface free from contamination. Calculate the collision frequency per square centimetre of surface made by O2 molecules at 300 K and (a) 100 kPa, (b) 1.00 Pa. Estimate the number of collisions made with a single surface atom in each second. The conclusions underline the importance of working at very low pressures (much lower than 1 Pa, in fact) in order to study the properties of uncontaminated surfaces. Take the nearest neighbour distance as 291 pm.Using the kinetic data pictured, estimate Vmax and Km for the catalysis of Substrate 1 by the following enzyme (using the correct units).
- A wet pipette was used to transfer 10.00 mL of 1M HNO3 in the determination of ΔHrxn. [magnitude of ΔHrxn] In a maximum of 3 sentences explain why ΔHrxn decreases.Although there are accurate graphical methods available for determining Vmax and Km of an enzyme-catalyzed reaction, sometimes these parameters can be quickly estimated by examining the values of Vo as [S] increases. Estimate the values of Vmax and Km of the reaction catalyzed by an enzyme in which the following data were obtained:liquid phase reaction:trityl (A) + methanol (B) -> product a batch reactor was carried out at 25°C in excess solution (Cb0 = 0.5 mol/dm^3). The pyridine reacts with HCL, which then precipitates as pyridine hydrochloride making the reaction irreversible. the order of the reaction with respect to the methanol concentration (B) is order 1. The concentration of triphenyl methyl chloride (A) is measured as a function of time and is shown below. -ra = kCa x Cb it is assumed that the value of Cb is almost always constant, or Cb = Cb0-rA = kCb0 x CA^x-rA = k1 x CA^x use the integral method to ensure that the reaction is second order with respect to triphenyl methyl chloride
- If the enzyme lactase has a Vo of 0.111111111111 mM per minute when [S] = 1.0 mM, and a Vo of 0.20 mM per minute when [S] = 5.0 mM, what is its Km? Calculate Vmax of the above enzyme (lactase). Calculate the slope on a Lineweaver-Burk plot (Km/Kmax) for the above enzyme (lactase).The adsorption equilibrium isotherm for aqueous phenol solution and activated carbon can be determined from the following data: c kg phenol/m3 solution q kg phenol/kg carbon 0.3220 0.150 0.1170 0.122 0.0390 0.094 0.0061 0.059 0.0011 0.045 Determine the appropriate isotherm for this experimental runIf 5 µM enzyme was used to obtain the data in the summary plot below, V-max = ________________ µM sec-1 and Km = ____________ µM for this enzyme (Enter numeric values to the nearest integer; Do NOT write units.)
- What is the retardation factor of a pulse of dissolved benzene move through organic-rich wetland soil (organic carbon fraction of soil, foc=50%) if the effective porosity is 0.4 and the bulk density of the soil is 1.5 g/cm3. Follow these important hints: - Determine organic carbon partition coefficient (Koc) - Use this Equation: K oc = K d / f oc to calculate Kd. Select the range which includes your calculated answer. Group of answer choices 300 to 400 2.0 to 2.5 mg/l 2.0 to 2.5 2.6 to 4.8 0.5 to 1.0 2.6 to 4.8 mg/l None of these ranges include my answer.The partition coefficient of ammonia between water and chloroform is wanted to be determined. The necessary quantities of ingredients are taken into the separation funnel, and the extraction process is applied. At the end of the extraction process, 5 mL portions of each of the water and chloroform phases are titrated with 0.1 M HCI in the presence of methyl orange indicator. If the volumes spent at the turning points are 7.2 and 5.1 mL, respectively, calculate the KSU, KLOROFORM (Dispersion coefficient) value.For the gaseous reaction A + B → P, the reactive cross-section obtained from the experimental value of the frequency factor is 8.7 x 10-22 m2. The collisional cross- sections of A and B estimated from the transport properties are 0.88 nm2 and 0.40 nm2, respectively. Calculate the steric factor, P, for the reaction.