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What is the mechanism of the reaction for the preparation of 4-bromoacetanilide from acetanilide and bromine? Provide a detailed step-by-step process with energy changes and intermediate formation.
answered
3 days
ago
in
Chemical synthesis
0
votes
20
views
What is the specific mechanism and reaction conditions necessary for the preparation of 2,4-dinitrobenzoic acid from benzoic acid and nitric acid, and what intermediate products are formed during the process?
answered
3 days
ago
in
Chemical synthesis
0
votes
15
views
How does the addition of a catalyst affect the equilibrium position of a chemical reaction? Provide a detailed explanation with an example.
answered
Feb 17
in
Chemical equilibrium
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votes
9
views
How can we design drugs specifically targeted to treat the novel coronavirus (COVID-19) while minimizing side effects on healthy cells?
answered
Feb 12
in
Medicinal Chemistry
0
votes
37
views
How can the potential environmental impact of radioactive waste disposal be minimized through the use of chemical engineering techniques such as vitrification and ion exchange?
answered
Feb 10
in
Environmental Chemistry
0
votes
45
views
How can the molecular weight of polyacrylonitrile be controlled during its synthesis from acrylonitrile monomer, and what factors affect the formation and properties of the resulting polymer?
answered
Feb 10
in
Chemical synthesis
0
votes
29
views
How can the efficiency of the emulsification process in the production of cosmetics be improved using chemical engineering principles?
answered
Feb 7
in
Chemical engineering
0
votes
42
views
Determine the maximum monolayer coverage of nitrogen gas on a silver surface in Langmuir units if the partial pressure of nitrogen gas is 2.5 atm at 298 K. The area per molecule of nitrogen adsorbed on the silver surface is known to be 1.55×10^-19 m^2 according to experimental data.
answered
Feb 4
in
Surface Chemistry
0
votes
46
views
Can the mechanical properties of ceramics be improved for use in high-temperature applications by adjusting the manufacturing parameters, such as sintering temperature and time?
answered
Feb 3
in
Materials Chemistry
0
votes
58
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Calculate the standard enthalpy change for the following reaction at 25°C given the enthalpies of formation (in kJ/mol) of the compounds involved:CaCO3(s) + 2HCl(aq) → CaCl2(aq) + CO2(g) + H2O(l)Hf(CaCO3) = -1206.9 kJ/molHf(CaCl2) = -795.8 kJ/molHf(CO2) = -393.5 kJ/molHf(H2O) = -285.8 kJ/molHf(HCl) = -92.31 kJ/mol
answered
Feb 3
in
Chemical thermodynamics
0
votes
44
views
What is the effect of changing the concentration of ligands on the formation of a complex ion of copper sulfate? Calculate the concentration of the complex ion [Cu(NH3)4(H2O)]2+ when 50 mL of a 0.1 M solution of ammonia is added to 50 mL of a 0.1 M solution of copper sulfate. The formation constant for the complex ion is 1.1 x 10^12.
answered
Feb 3
in
Chemical equilibrium
0
votes
64
views
How can potentiometry be used to determine the concentration of chloride ions in a water sample collected from a lake?
answered
Jan 29
in
Analytical Chemistry
0
votes
49
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A copper rod with a surface area of 5 cm² is coupled with an iron rod with a surface area of 10 cm² to form a galvanic cell. When the circuit is closed, the current flows for 2 hours and the weight loss of the iron rod was found to be 0.58 g. Determine the corrosion rate of the iron rod in millimeters per year (mm/yr) assuming a density of 7.86 g/cm³ for the iron.
answered
Jan 22
in
ElectroChemistry
0
votes
86
views
What is the balanced chemical equation for the oxidation of ethanol to ethanoic acid using potassium dichromate(VI) as the oxidizing agent under acidic conditions?
answered
Jan 21
in
Organic Chemistry
0
votes
62
views
According to Binet's intelligence test, what is the purpose of mental age?
answered
Jan 20
in
Psychology
0
votes
32
views
When do personality traits start to become stable?
answered
Jan 20
in
Psychology
0
votes
61
views
According to Elizabeth Loftus' research on eyewitness testimony, why can eyewitnesses be unreliable?
answered
Jan 17
in
Psychology
0
votes
55
views
According to the biosocial approach, how does biology interact with socialisation to influence gender?
answered
Jan 17
in
Psychology
0
votes
61
views
What is the principle of Occam's razor?
answered
Jan 16
in
Psychology
0
votes
51
views
According to Edmund Jacobson's theory of relaxation, why is relaxation effective in treating anxiety?
answered
Jan 15
in
Psychology
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