The reaction A - R+S with rate -rA = k (0th order) occurs in a batch reactor that operates under isothermal and isobaric conditions (assume that g = 1). The initial reaction mixture contains reactant A only. The half-life of the reaction (i.e., CA = CAO/2) is t1/2 = 10 min. Calculate the time required for the reaction to be completed (i.e., CA = 0). 2.

The reaction A - R+S with rate -rA = k (0th order) occurs in a batch reactor that operates under isothermal and isobaric conditions (assume that g = 1). The initial reaction mixture contains reactant A only. The half-life of the reaction (i.e., CA = CAO/2) is t1/2 = 10 min. Calculate the time required for the reaction to be completed (i.e., CA = 0). 2.

Principles of Instrumental Analysis

7th Edition

ISBN:9781305577213

Author:Douglas A. Skoog, F. James Holler, Stanley R. Crouch

Publisher:Douglas A. Skoog, F. James Holler, Stanley R. Crouch

Chapter32: Radiochemical Methods

Section: Chapter Questions

Problem 32.12QAP

See similar textbooks

Similar questions

The gas phase reaction A→B+2C is carried out in a constant volume batch reactor (V=25 L). Twenty moles of A with 80% purity (the remainder is inert) are introduced into the reactor.Calculate the time to reduce the concentration of A to 0.1 mol/L if the reaction is first order with k=0.524 min-1.Calculate the time required to consume 10 mols of A if the reaction is second order and k=0.982 L/mol.h.If the temperature is 150°C, what is the total initial pressure? What is the final total pressure if the reaction occurs in its entirety? Explain why pressure varies in this situation.
An exothermic reaction is taking place in a constant volume reactor that contains a cooling coil. The reaction A -> B proceeds with a reaction rate constant of k1. The rate of reaction is given as kCA. The feed concentration of A is 4 mol/L, the reaction conversion is 50%, and the reaction rate constant k is 1*10-2 h^-1. The volumetric flow rate remains constant throughout the reaction, at 2 L/hr. The initial temperature in the reactor is 40°C, and the final temperature is 60°C. The heat released at the end of the reaction is 60 j/mol. The amount of heat removed by the coil is 400 j. The density of the mixture is 4 kg/m^3, the Cp value is 20 j/mol.K. If the reactor volume is 4 liters, find the change in temperature over time.
In a batch reactor, reactant A is steadily converted into product B. The initialconcentration of reactant A is 100 mg/L. During a 10-hour reaction course, it wasobserved that the concentration of A in the reactor decreased at a constant rate of 10mg/L per hour. Based on the result, you can determine that the transformation reactionA→B follows ( ) with respect to reactant A.
Write the dehydrogenation of isopropanol on 1 wt% Pt-C catalyst. Derive the rate law in terms of molar flowrate of isopropanol and catalyst weight, assuming the reactor as a PBR for gas-solid reaction system
2. Consider a gas-phase reaction: A + 2B → C that takes place in a packed-bed reactor (PBR) with a catalyst volume of 0.2 L. The feed rate of A is 0.1 mol/s and the feed rate of B is 0.2 mol/s. The reaction rate constant is 0.01 L/(mol*s) and the pressure drop across the catalyst bed is 2 bar. What is the conversion of A at the exit of the reactor?
An ocean outfall diffuser that discharges treated wastewater into the Pacific ocean is 5,000 m from a public beach. The wastewater contains 105 coliform bacteria per milliliter (coliform /mL). The wastewater discharge flow rate is 0.3 m3/s. The coliform first-order death rate in seawater is approximately 0.3 h-1. The current carries the wastewater plume toward the beach at a rate of 0.5 m/s. The ocean current may be approximated as a pipe carrying 600 m3/s of seawater. Determine the coliform concentration at the beach. Assume that the current behaves as a plug-flow reactor and that the wastewater is completely mixed in the current at the discharge point.
The first-order degradation rate constant k was determined to be 0.0125/day for contaminant A and 0.0030/day for contaminant B in a soil. Calculate the half-life T1/2 and the 95% dissipation time for these contaminants in the soil. Compare the persistence between the two contaminants.
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?
Use the Debye–Hückel limiting law to show that changes in ionic strength can affect the rate of reaction catalysed by H+ from the deprotonation of a weak acid. Consider the mechanism: H+ + B → P, where H+ is supplied by the weak acid, HA, which has a fixed concentration. First show that log [H+] depends on the activity coefficients of ions and thus depends on the ionic strength. Then find the relationship between log(rate) and log [H+] to show that the rate also depends on the ionic strength.
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.
The following gas-phase reaction takes place in a closed, constant-volume batch reactor at isothermal (constant temperature) conditions. 2CO+O2→2CO2 Initially, the reactor contains 0.564 kmol of CO, 1 kmol of O2, 1 kmol of CO2, and 0.5 kmol of N2 at a total pressure of 5 atm. Assuming ideal gas behavior, what is the reactor pressure (in atm) when the reaction goes to completion?
2. An exothermic reaction, A- B, takes place adiabatically in a stirred tank reactor. The liquid reaction occurs constant volume in a 1000-gallon reactor. The reaction can be considered first order and irreversible with the rate constant given by k-1015e(min-1). -20000 Derive a transfer function relating the exit temperature, T, to the inlet concentration Ca State any assumptions that you make. flowrate q? Steady State Conditions:-150°F,4,-08쁩.q = 20 au (in and out of the reactor) Physical Constants: C'e 0.8 mu,pe 52th,-AHR-500 mol a. b. How sensitive is the gain to changes in steady-state T, Cai and volumetric mol gal minute k)