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0
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What is the yield of 2,4-dinitrophenylhydrazine obtained from the reaction of hydrazine and 2,4-dinitrochlorobenzene if 5 grams of hydrazine and 7 grams of 2,4-dinitrochlorobenzene are used and the resulting product weighs 4.5 grams?
asked
Mar 1
in
Chemical synthesis
0
votes
1
answer
39
views
What is the yield of 2,4-dinitrophenylhydrazine obtained when using an excess of hydrazine to react with 1.00 g of 2,4-dinitrochlorobenzene under standard conditions?
asked
Mar 1
in
Chemical synthesis
0
votes
1
answer
37
views
What is the yield of 2,4-dinitrophenol obtained from the reaction of phenol and nitric acid when starting with 10 grams of phenol and 15 mL of 65% nitric acid under specific reaction conditions?
asked
Mar 1
in
Chemical synthesis
0
votes
1
answer
40
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What is the yield of 2,4-dinitrophenol obtained in the preparation of 2,4-dinitrophenol from phenol and nitric acid, given that 10 grams of phenol was used and a 95% yield was achieved?
asked
Mar 1
in
Chemical synthesis
0
votes
1
answer
42
views
What is the yield of 2,4-dinitrobenzoic acid produced from the reaction of 10 grams of benzoic acid with excess nitric acid in the presence of sulfuric acid catalyst under reflux, if the experimental yield obtained was 7.5 grams?
asked
Mar 1
in
Chemical synthesis
0
votes
1
answer
41
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What is the yield of 2,4-dichloronitrobenzene produced from the reaction of 10 grams of nitrobenzene and excess chlorine gas, given that the reaction conditions were optimal and the purity of the final product was determined to be 95%?
asked
Mar 1
in
Chemical synthesis
0
votes
1
answer
42
views
What is the yield of 2,4-dichloronitrobenzene obtained from the reaction between nitrobenzene and chlorine gas when starting with 10 grams of nitrobenzene and excess chlorine gas, given that the reaction has a theoretical yield of 95%?
asked
Mar 1
in
Chemical synthesis
0
votes
1
answer
41
views
What is the yield of 2,4-dichlorobenzoic acid formed when 10 grams of benzoic acid and excess chlorine gas are used in the synthesis, if the actual yield obtained is only 6.5 grams?
asked
Mar 1
in
Chemical synthesis
0
votes
1
answer
33
views
What is the yield of 2,4-dichlorobenzoic acid that can be obtained from the reaction between 100 grams of benzoic acid and 50 grams of chlorine gas, assuming an 80% yield for the reaction?
asked
Mar 1
in
Chemical synthesis
0
votes
1
answer
35
views
What is the yield of 2,4,6-trinitrotoluene that can be obtained if 500 mL of toluene is mixed with 700 mL of nitric acid (concentration 65%) and the reaction is carried out for 2 hours at a temperature of 60°C?
asked
Mar 1
in
Chemical synthesis
0
votes
1
answer
47
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What is the amount of work done during an irreversible expansion of an ideal gas at constant temperature and pressure?
asked
Mar 1
in
Physical Chemistry
0
votes
1
answer
32
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What is the wavenumber (cm^-1) of the fundamental vibrational mode of carbon dioxide using Fourier transform infrared spectroscopy?
asked
Mar 1
in
Physical Chemistry
0
votes
1
answer
35
views
What is the wavelength of the photon emitted when an electron in a hydrogen atom relaxes from the second excited state to the ground state using quantum chemical calculations of excited states?
asked
Mar 1
in
Computational Chemistry
0
votes
1
answer
32
views
What is the vibrational frequency of HCl molecule in its ground state?
asked
Mar 1
in
Physical Chemistry
0
votes
1
answer
43
views
What is the vibrational frequency of CO2 molecule in cm-1 using infrared spectroscopy with a wavelength of 4.24 µm? (The molecular bond length can be assumed to be 116.3 pm)
asked
Mar 1
in
Physical Chemistry
0
votes
1
answer
46
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What is the vibrational frequency and the infrared spectrum of a water molecule (H2O) in its ground state using the harmonic oscillator model?
asked
Mar 1
in
Quantum Chemistry
0
votes
1
answer
34
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What is the vibrational frequency and the infrared spectrum of water molecule (H2O) using quantum chemistry calculations?
asked
Mar 1
in
Quantum Chemistry
0
votes
1
answer
54
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What is the vibrational frequency and corresponding infrared spectrum of ammonia (NH3) molecule at room temperature?
asked
Mar 1
in
Quantum Chemistry
0
votes
1
answer
45
views
What is the surface area of a sample of activated carbon with a BET (Brunauer-Emmett-Teller) surface area of 500 m²/g, if 5 g of the sample is used in the experiment?
asked
Mar 1
in
Surface Chemistry
0
votes
1
answer
33
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The decomposition of hydrogen peroxide in aqueous solution is a first-order reaction with a rate constant of 4.6 x 10^-4 s^-1 at 25°C. Calculate the time required for 75% of a 0.010 M solution of hydrogen peroxide to decompose at 25°C.
asked
Mar 1
in
Chemical kinetics
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