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.

Q: (iii) Given that the following data (Table 1) was obtained for the reaction: C2H5NH2 + C6H5COCH,Br…

A: Given:

Q: II.2- Saponification of ethyl ethanoate, a second-order kinetic? Data: R = 8.314 J mol- K- The…

A:

Q: For an enzyme -catalyzed reaction, Km=10.0 mmol dm³, vmax=0.250 mmol dm3 s-l; [E]o= 2.3 x 10-6 mmol…

A: Calculation of Kb: Kb=vmax[E]0=0.250 mmol dm-3 s-12.3×10-6 mmol dm-3=0.11×106 s-1

Q: Assuming first order kinetics, the half-life (t1/2), of the major metabolite in the body is 27…

A:

Q: The following data was collected for the reaction between ethoxide and methyl iodide T(°C) Rate…

A: We are given the graph between ln(K) and 1/T. The equation of a y=-9930.5x+41.445line is,

Q: The enzyme urease increases the rate of urea hydrolysis at pH 8.0pH 8.0 and 20 °C20 °C by a factor…

A: Given, pH of urea = 8.0 Rate enhancement factor = =1014 Time = 88 min T=20°C

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A: Step : 1              Calculate the temperature.

Q: II.7- Saponification, initial rates and half-life An esterification reaction is studied at 350 K…

A: A esterification reaction is a reaction between an alcohol and a carboxylic acid that results in the…

Q: The following initial rate data were obtained on the rate of binding of glucose with the enzyme…

A: The transfer of the phosphoryl group is catalyzed by the enzyme hexokinase. It undergoes the…

Q: 21-25. The decomposition of N₂O5 follows first-order kinetics based on the reaction below. 2N₂O5 (g)…

A: Given, 2N2O5(g)  ➝ O2(g) + 4NO2(g) Decomposition of N2O5 follows first order kinetics. Rate constant…

Q: In a pulse radiolysis experiment, H atoms are suddenly created in liquid ethanol (density 0.79 g cm)…

A: The half-life for the first-order reaction can be given as follows: t1/2=0.693k1 where t1/2:…

Q: (c). Describe some features of catalysis by zeolites. (d). Nickel catalyses the hydrogenation of a…

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Q: The data shown below are Fe(II) concentrations observed at two different depths over an incubation…

A: NOTE : The data looks to be somewhat incorrect. The value of concentration should be decreasing with…

Q: In the experiment, below gas-phase homogenous oxidation, k 2 NO + O2 -------> 2NO2 was confirmed…

A: This is second order reaction because it is directly proportional to second power of concentration…

Q: P17B.3 The data below apply to the formation of urea from ammonium cyanate, NH,CNO → NH,CONH,.…

A:

Q: 1) Write the general rate law equation for the reaction Acetone (C,H,0(a) + Haa) + lodine (1z(aq))…

A: Since you have posted multiple questions, we are entitled to answer the first only. 1) The reaction…

Q: (b) The tabulated data has been determined for the hydrołysis of ethyl iodide (CHSI) CHSI (aq) +OH…

A: A. We know that : ln(k2/k1) = Ea/R[1/T1-1/T2] ....(1) Here, k1 = 5*10^-5 M^-1s^-1, k2 = 3.68*10^-4…

Q: A mechanism that has been proposed for the conversion of 2-methylpropene to fert-butyl alcohol in…

A:

Q: The enzyme – catalyzed conversion of a substrate at 25°C has Michaelis constant of 0.04 mol L1. The…

A: Given: Michaelis Constant (Km)= 0.04 mol L-1 Rate of the reaction= 2.45×10-4 mol L-1 s-1…

Q: An enzyme-catalyzed reaction has a Km of 1 mM and a Vmax of 4 nmole/L sec-1. The reaction velocity…

A: Given: Km = 1 mM Vmax = 4 nmole/L sec-1 Substrate concentration = 0.25 mM

Q: 5. lo (b) Estimate the instantaneous rate of change of concentration at t=10?

A: Instantaneous rate means the rate at exactly that point of time, here at 10 h.

Q: II.2- Saponification of ethyl ethanoate, a second-order kinetic? Data: R = 8.314 J mol- K-1 The…

A:

Q: The enzyme urease increases the rate of urea hydrolysis at pH 8.0 and 20 °C by a factor of 1014.…

A: Given that : At pH 8.0 and 20°C, the enzyme urease increases the rate of urea hydrolysis by a factor…

Q: At 147oC, the initial rate of the gas-phase decomposition of 1,1-dimethyl peroxide (DMP) depends on…

A: The Rate Law can be written as: Rate=k[A]n                    ...... (1) where n is the order of the…

Q: NO + 03 (9) NO2(g) + O2 (g) This reaction has been studied in the laboratory, and the following rate…

A: Given chemical reaction: NO (g) + O3 (g) → NO2 (g) + O2 (g) The rate law for the given reaction,…

Q: 3. Some values of the rate constant for the alkaline hydrolysis of ethyl iodide over the temperature…

A: Answer : -  Energy of activation = Ea = 83.140 kJ/mol  Pre-exponential Factor = A = 1623346…

Q: It is known that the kinetics of some transforma- tion obeys the Avrami equation and that the value…

A:

Q: The enzyme-catalysed conversion of a substrate at 25 oC has a Michaelis constant of 0.045 mol dm-3.…

A: Enzyme catalyzed reaction: to catalyze such reactions enzyme is used as a catalyst that binds to one…

Q: The degradation of the antibiotic clindamycin stored at 343 K in aqueous solution at pH 4 is found…

A: The expression of Arrhenius equation is shown below: lnK = lnA-EaRT Where; K = rate constant A =…

Q: Find the forward (k Jand reverse (k-1) rate constants for the recombination reaction; OH +H SH,0 at…

A: Given: K = [H2O][H+] [OH-] = 0.51 ×1016 M-1

Q: 1) Given: 2NO2 --> 2NO + O2 [NO2]o (M) Rate (M/s) 0.01 7.1 x 10-5 0.02 28.1 x 10-5 a) Give the rate…

A: Answer:- This question is answered by using the simple concept of determination of rate law using…

Q: A continuous source has been leaking contaminant for 2 years into a 1-D aquifer. The steady state…

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Q: The gas phase decomposition of dinitrogen pentoxide was studied at 294 Kand 1 bar. N,Os > NO: + NO,…

A: Since we know that, for different order of reactions, the relationship between the concentration of…

Q: The gas-phase reaction 2 N2O5 (g) → 4 NO2(g)+ O2(g) has an activation energy of 103 kJ/mol, and the…

A: Given: The activation energy is 103 kJ/mol. The rate constant at 328.0 K is 0.0900 min-1. The final…

Q: Consider the first-order decomposition of nitramide shown below: NH2NO2(aq) = N2O(g) + H2O(1) The…

A:

Q: Aspirin sample solutions were  stored at 30°C and were assayed every month for six months.  The…

A:

Q: 1. The following initial rate data are for the reaction of hypochlorite ion with iodide ion in IM…

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Q: A mechanism that has been proposed for the conversion of 2-methylpropene to tert-butyl alcohol in…

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Q: The ha lf-l ife of pyruvic acid in the presence of an aminotransferaseenzyme (which converts it to…

A: For the first-order reaction, the half-life relates to the rate constant (k) as follows: t12 =…

Q: 8. The temperature dependence of the acid-catalyzed hydrolysis of penicillin is investigated. and…

A:

Q: P17B.3 The data below apply to the formation of urea from ammonium cyanate, NH CNO NH,CONH.…

A: The 1 dm3 is equivalent to 1 L. The number of moles n(AC) of ammonium cyanate is calculated as shown…

Q: what is the activation energy? rate = r = k [I-]^1 [S2O82-]^1 Mixtures:             Temperatures…

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Q: The protein calcineurin binds to the protein calmodulin with an association rate of 8.9 x…

A: Dissociation constant is an equilibrium constant which can be expressed as ratio of backward…

Q: 10. The hydrolysis of Drug as a base at 25° C is first order. The ko has the value 0.0096 day-1, and…

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Q: For the decomposition of nitramide in aqueous solution at 25 °C NH2NO2(aq)–N20(g) + H20(1) the…

A: In chemistry, reaction rate refers to the rate at which a chemical reaction occurs.  It is expressed…

Q: Rate Enhancement by Urease.The enzyme urease enhances the rate of urea hydrolysis at pH 8.0 and 20…

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Q: I monitor the reaction of Compound B with a large excess of NaOH at 298 K, and get the following…

A: Data analysis Time (sec) Abs ln Abs 0 0.4555 -0.78636 10 0.3857 -0.9527 20 0.3178…

Q: The reaction between O2 and hemoglobin in aqueous solution has an experimentally determined overall…

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Q: In the following table are listed the rate constants for the decomposition of N205 at different…

A: