Given the following reaction mechanism, what is the equation for the overall reaction? 2A --> B+ 2C (slow) B+C -> D + E (fast) C + D -> E+ F (fast) 2A-->2E + F 2A + B + 2C --> D + 2E + F 2A + 2C --> 2E + F 2A + B + 2C + D --> B + 2C + D + 2E + F 2A + C --> 2E + F
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What is the equation for the overall reaction?
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- Give the reaction mechanism for the following subparts in clear handwritten!A is subject to 1st-order degradation and its half-life is 5 days. Its 1st order rate constant = ______ day-1The ha lf-l ife of pyruvic acid in the presence of an aminotransferaseenzyme (which converts it to alanine) was found to be 221 s. How long will it take for the concentration of pyruvic acid to fal l to 1/ 64 of its in it ial va lue in th is first-order reaction?
- A new drug received by a product research and development department was given preliminary stability tests and found to follow a first-order degradation at 30 C and 40 C. After 24 hours at 40 C, the drug was found to be 80% active. After 24 hours at 30 C, the drug was found to be 85% active. Please calculate, based on this data, the time required for a 10% loss of potency at 25 C (shelf life).H + O2--> OH + O has a rate constant = 4.7 * 10-7 M-1s-1 at 1000K. The activiation energy required = 66.5 kj/mol. Calculate the rate constant at 2000K. Plot the concentration vs time that corresponds to your answer. *Please help exlain why this is the correct plot. I am confused since there are three different ways to plot them: - [A] vs. Time - ln[A] vs. Time - 1/[A] vs. timeAn enzyme has a Km equal to 1.0 x 10-4 M (molar) for a certain substrate S. When [S] = 1.0 x 10-4 M, 2% of the substrate is transformed into product in 1 minute. Which of the following statements are correct? Hint: use the Michaelis-Menten equation; Remember that a reaction rate can be expressed in molar units / min (M / min). Select one or more than one: a) When [S] = 1.0 x 10-4 M, the initial reaction rate, V0, is 2.0 x 10-7 M / min b) For this enzyme Vmax = 4.0 x 10-7 M / min c) For this enzyme Vmax is equal to 2.002 x 10 -7 M / min. d) When [S] 0 = 1.0 x 10-3 M, the initial speed is 3.64 x 10-7 M / min. e) When [S] = 0.01 M, the initial speed is 4.0 x 10-3 M / min
- The second-order rate constant for the reaction CH3COOC2H5(aq) + OH-(aq)→ CH3CO2-(aq) + CH3CH2OH(aq) is 0.11 dm3 mol-1 s- 1. What is the concentration of ester after(a) 15 s, (b) 15 min when ethyl acetate is added to sodium hydroxide so that the in it ial concentrations are [NaOH] 0.055 mol dm-3 and [CH3COOC2H5] = 0.150 mol dm-3?The iodide-catalyzed decomposition of hydrogen peroxide is thought to proceed by a four-step mechanism: H2O2(aq) + I-(aq) --> HOI(aq) + OH-(aq) (slow)HOI(aq) + OH-(aq) --> H2O(l) + OI-(aq)OI-(aq) + H2O2(aq) --> HOOI(aq) + OH-(aq)HOOI(aq) + OH-(aq) --> H2O(l) + O2(g) + I-(aq) (a) If the first step of this mechanism is rate-determining (slow), choose the correct rate law for the overall process. Rate = k [HOI] [H2O2] Rate = k [H2O2]2 Rate = k [I-] [H2O2] Rate = k [H2O2]2 [H2O2] Rate = k [I-] [HOI] Rate = k [H2O2] [H2O2] (b) Choose the correct chemical equation for the overall process. HOI(aq) + OH-(aq) --> H2O(l) + OI-(aq) H2O2(aq) + I-(aq) --> HOI(aq) + OH-(aq) 2 H2O2(aq) --> 2 H2O(l) + O2(g) (c) Identify an intermediate in the reaction. H2O HOI H2O2 I- (d) Identify the catalyst in the reaction. H2O H2O2 HOI I- (e) Identify a reactant in the reaction. H2O2 HOI H2O I- (f) Identify a product in the reaction. HOI H2O H2O2 I-The rate of a first-order reaction is followed by spectroscopy,monitoring the absorbance of a colored reactant at 520 nm.The reaction occurs in a 1.00-cm sample cell, and the onlycolored species in the reaction has an extinction coefficientof 5.60 x 103 M-1 cm-1 at 520 nm. (a) Calculate the initialconcentration of the colored reactant if the absorbance is0.605 at the beginning of the reaction. (b) The absorbancefalls to 0.250 at 30.0 min. Calculate the rate constant inunits of s - 1. (c) Calculate the half-life of the reaction.(d) How long does it take for the absorbance to fall to 0.100?
- Give typed full explanation not a single word hand written otherwise leave it CH3SCH3(g) + OH(g) → Products For a constant O2 concentration of 150 torr, it has an activation energy of -15880 J/mol and a rate constant at 270.0 K of 1.33 x 10-11 cm3/molecule/s. Determine the rate constant at 27 °C (cm3/molecule/s).The enzyme-catalysed conversion of a substrate at 25 oC has a Michaelis constant of 0.045 mol dm-3. The rate of the reaction is 1.15 mmol dm-3 s-1 when the substrate concentration is 0.110 mol dm-3 . What is the maximum velocity of this reaction?The first-order rate constant, k1, for the decomposition of ampicillin at pH 5.8 and 35?C is k1 = 2 × 10-7 sec-1. The solubility of ampicillin is 1.1 g/100 mL. If it is desired to prepare a suspension of the drug containing 2.5 g/100 mL, calculate the zero-order rate constant, k0, and the shelf-life, that is, the time in days required for the drug to decompose to 90% of its original concentration (at 35?C) in solution. Note: 100 mL = 1 deciliter = 1 dL.