Recent questions in Chemistry

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Design a chemical reactor system for the production of 500 kg/hr of methanol (CH3OH) through the reaction of carbon monoxide (CO) and hydrogen gas (H2). The reactor should operate at a pressure of 100 atm and a temperature of 300°C, and must achieve a minimum conversion rate of 80%. Determine the type of reactor needed and its dimensions, as well as the required flow rates of CO and H2 gas to meet the production target.

asked Feb 3 in Chemical engineering by MadelaineUth (570 points)

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1 answer 38 views

Design a chemical reactor for the synthesis of ammonia via the Haber process. The reactor should operate at a pressure of 200 atm and a temperature of 450°C. Assume a feed of nitrogen and hydrogen gases at a ratio of 1:3, with a flow rate of 10 moles per minute. Determine the size of the reactor and select a suitable catalyst for the reaction.

asked Feb 3 in Chemical engineering by VetaFunk053 (410 points)

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1 answer 41 views

Design a chemical reactor for the reaction A + B --> C at a rate of 2 moles/min, with a reaction temperature of 300°C and a pressure of 3 atm. The reaction is exothermic and has a heat of reaction of -200 kJ/mol. The reactants A and B are fed into the reactor at a flow rate of 1 mole/min each. Choose the appropriate reactor design and calculate the volume needed to achieve a conversion of 95%.

asked Feb 3 in Chemical engineering by ClaritaGoetz (290 points)

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1 answer 40 views

Design a chemical reactor for the production of ethylene oxide through the direct oxidation of ethylene. The reactor should have a production rate of 100 tons per day and maintain a constant temperature of 250°C. Assume a feed composition of 90% ethylene and 10% oxygen. The reactor should also have a conversion efficiency of at least 95%. Compute the necessary reactor volume and the optimal flow rate of ethylene and oxygen to achieve the desired production rate and conversion efficiency.

asked Feb 3 in Chemical engineering by TristanMarlo (430 points)

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1 answer 31 views

Design a chemical reactor for the production of 500 kg/day of ethylene oxide through the oxidation of ethylene with oxygen in the presence of a silver catalyst. The reactor should achieve a conversion of 85% with a selectivity of 95% towards ethylene oxide, while operating at 3 atm and a reactor temperature range of 200-250°C. The feed stream consists of 15% ethylene, 5% oxygen, and the rest is nitrogen. Determine the appropriate reactor type, size, and operating conditions to achieve these specifications.

asked Feb 3 in Chemical engineering by JamiNovotny2 (210 points)

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1 answer 56 views

Design a chemical reactor for the production of 2000 kg of ammonia per hour from 3000 kg of nitrogen and 6000 kg of hydrogen per hour, using the Haber-Bosch process. Determine the most suitable operating conditions such as pressure, temperature, and catalyst type for maximum yield and cost-effectiveness.

asked Feb 3 in Chemical engineering by Sterling77M0 (370 points)

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1 answer 9 views

Design a chemical reactor for the production of 1000 kg per hour of ammonia through the Haber process, given a feedstock gas composition of nitrogen and hydrogen in a 3:1 molar ratio, and operating conditions of 450°C at 100 bar pressure. Determine the reactor size and necessary input flow rates of reactants, and identify any key design considerations that need to be taken into account.

asked Feb 3 in Chemical engineering by ArlenDibdin0 (330 points)

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1 answer 55 views

Design a Chemical Reactor for the Hydrogenation of Benzene to Cyclohexane:Given the reaction between benzene and hydrogen gas to produce cyclohexane (C6H6 + 3H2 -> C6H12), design a chemical reactor that can convert 900 kg/hr of benzene to cyclohexane, assuming a 90% conversion is desired. The reactor should operate at 300°C and 20 atm, and the hydrogen flow rate is limited to 3000 kg/hr. Determine the reactor type, size, and necessary parameters such as heat transfer, pressure drop, and residence time.

asked Feb 3 in Chemical engineering by TeresitaCrum (290 points)

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1 answer 56 views

Design a chemical reactor for the exothermic reaction A + B -> C, given the following parameters: - The reaction takes place at a temperature of 500°C- The reaction rate constant is 0.05 L/mol/min- The feed stream contains both A and B in equal molar amounts, with a total flow rate of 100 L/min- The desired product, C, should have a concentration of at least 90% in the reactor effluent stream- The reactor should have a residence time of at least 5 minutes. Determine the type of reactor (batch, plug flow, or continuously-stirred tank) and the dimensions (volume, length, diameter) required to achieve the desired product concentration and residence time, assuming an isothermal and well-mixed reactor.

asked Feb 3 in Chemical engineering by LucieFrank2 (310 points)

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1 answer 48 views

Design a chemical engineering system that can produce 500 kg of vanilla flavoring per day, using natural ingredients only. What raw materials will be needed? What is the production process involved? What safety measures should be implemented? How can sustainability be ensured in this process? Provide a detailed report on the system designed.

asked Feb 3 in Chemical engineering by IMLKristan85 (210 points)

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1 answer 64 views

Design a biodegradable polymer-based scaffold to facilitate the regeneration of damaged cartilage. Include the synthesis and characterization of the polymer and provide evidence for its effectiveness in supporting the growth of chondrocytes (cartilage cells).

asked Feb 3 in Polymer Chemistry by MiquelTic937 (210 points)

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1 answer 51 views

Design a biodegradable polymer that can be used as a sustainable alternative to single-use plastic bags, and provide a detailed synthesis route for its production.

asked Feb 3 in Polymer Chemistry by CaroleGalvan (350 points)

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1 answer 44 views

Describe the steps involved in the preparation of 2,4-dichlorobenzoic acid from benzoic acid and chlorine gas, including the chemical reactions that occur during the process, the reagents required, the conditions required for each step, and the yields of each intermediate and final product.

asked Feb 3 in Chemical synthesis by TinaStamps81 (310 points)

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1 answer 49 views

Describe the step-by-step procedure for synthesizing polyvinylpyrrolidone from vinylpyrrolidone monomer, including the necessary reagents, temperatures, and reaction conditions.

asked Feb 3 in Chemical synthesis by AnastasiaMee (330 points)

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1 answer 46 views

Describe the role of the metal ion in the active site of metalloenzymes, using the coordination chemistry principles. Provide examples of metalloenzymes and their relevant metallic centers, and explain how the metal ion contributes to their function.

asked Feb 3 in Coordination Chemistry by IUTLilliana (370 points)

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1 answer 37 views

Describe the photochemical properties of lanthanide complexes and explain how they differ from the photochemistry of other transition metal complexes? Provide examples of applications of lanthanide complexes in photochemistry.

asked Feb 3 in PhotoChemistry by ConnorStoltz (390 points)

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1 answer 51 views

Describe the mechanism of Heterogeneous Catalysis taking place in the Haber process for ammonia synthesis and explain the role of the catalyst in the reaction.

asked Feb 3 in Surface Chemistry by DarrenDoak1 (410 points)

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1 answer 48 views

Describe the factors that contribute to the fluidity of the lipid bilayer of a cell membrane and explain how changes in these factors can affect membrane function.

asked Feb 3 in BioChemistry by OtiliaTemple (330 points)

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1 answer 12 views

Considering the subtopic of the study of properties of ceramics for high-temperature applications, the problem for the chemistry student to solve could be:What are the specific material properties of ceramics that make them suitable for use in high-temperature applications, and how can these properties be optimized for various industrial or scientific purposes? What types of fabrication methods or processing techniques can be used to create ceramics with desired properties for specific high-temperature applications?

asked Feb 3 in Materials Chemistry by JolieTristan (370 points)

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1 answer 10 views

Considering the reaction: Zn(s) + Cu2+(aq) -> Cu(s) + Zn2+(aq) What is the cell potential (in volts) at 25°C when the concentrations of [Cu2+] and [Zn2+] are 0.5 M and 1.0 M, respectively, and the zinc electrode is the anode? The standard reduction potentials for Cu2+/Cu and Zn2+/Zn are 0.34 V and -0.76 V, respectively.

asked Feb 3 in ElectroChemistry by FrancescaBid (350 points)

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