comment on the effectiveness of my extraction and purification, state and use data especially percent recovery and melting point for lab discussion.
Homework Answers
The crude extraction of benzoic acid is effective resulting in 93.5% yield, and its further recovery using the crude is greater than 80% in both cases, the melting point obtained for these fractions range within 4 oC difference from 119.6 to 123.6 oC. The melting point range could be improved by removing any further residual impurities.
The crude extraction of p-dichlorobenzene is higher than 100%, this could be because the compound is not completely dry or has some residual impurities from reactants. Further recovery using the crude resulted in very poor yields i.e. ~12%. This could be because the compound is not crystallized in the solvent used. The melting point range for these is within 3 oC difference from 52.4 to 55.8 of this range could be further narrowed by removing any further minor impurities.
Overall the p-dichlorobenzene recovery needs to be significantly improved.
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comment on the effectiveness of my extraction and
purification, state and use data especially percent recovery...
comment on the effectiveness of my extraction and purification, state and use data especially percent recovery...
comment on the effectiveness of my extraction and
purification, state and use data especially percent recovery and
melting point for lab discussion.
Genzorc aad P-Dich borobencene Islared Grud Po-z Tral 1-meting Pail 9. 6-122.8C 52.4-548 53.2- 55.8C 12.3-123.6 Percent Recovery Calculation: (show one sample calculation for each) Crude masS % Recovery x 100% Initial masS p-Dichlorobenzene Benzoic Acid Purified mass x 100% % Recovery Crude masS 97.21 P-Dichlorobenzene Benzoic Acid Purified mass x 100% % Recovery Initial masS 5 p-Dichlorobenzene...
comment on the effectiveness of my extraction and purification, state and use data especially percent recovery a...
comment on the effectiveness of my extraction and
purification, state and use data especially percent recovery and
melting point for lab discussion.
Genzorc aad P-Dich borobencene Islared Grud Po-z Tral 1-meting Pail 9. 6-122.8C 52.4-548 53.2- 55.8C 12.3-123.6 Percent Recovery Calculation: (show one sample calculation for each) Crude masS % Recovery x 100% Initial masS p-Dichlorobenzene Benzoic Acid Purified mass x 100% % Recovery Crude masS 97.21 P-Dichlorobenzene Benzoic Acid Purified mass x 100% % Recovery Initial masS 5 p-Dichlorobenzene...
need help with the empty spaces please! Remote_Chromic_Acid_Oxidation_Data(1).docx Data Sheet Name__Last-First Date_03/23/2020 Partner(s) Name(s): N/A General...
need help with the empty spaces please!
Remote_Chromic_Acid_Oxidation_Data(1).docx Data Sheet Name__Last-First Date_03/23/2020 Partner(s) Name(s): N/A General Observations: Mass of p-Nitrotoluene used = 0.147 g Part I: Synthesis of p-nitrobenzoic Acid Mass of filter paper: _0.320 g Mass of filter paper with crude product:_0.451 g. Mass of crude product:. 136 .4519 Crude percent yield: Melting point range of crude product: _221-232 °C Part II: Purification of p-nitrobenzoic Acid Mass of filter paper:__0.288 g _ - 2884 Mass of filter paper with...
please can you tell me how the person calculated the percent recovery and if it's correct...
please can you tell me how the person calculated the percent
recovery and if it's correct ???
Reactions: Reaction of Benzoic Acid with base Data and Calculations: Measurements Benzoic acid Benzocaine 9-Fluorenone Acid, Base, Neutral 0.052g 52mg 0.057g- 57mg 0.051g 51mg substances initial mass. Culture tube initial 11.431g 11.431g 11.431g Culture tube final 11.578g 11.578g 11.578g Aluminum-weighing dish 0.413g 0.415g initial Aluminum-weighing dish 0.429g 0.431g Final Recovered mass 0.016g 16mg 0.018g 18mg 0.147g 1.47mg Percentage Recovery 32.5% 35.6% 31.8% Melting...
CHROMIC ACID OXIDATION Pre Lab Questions the amounts of materials that will be used from the...
CHROMIC ACID OXIDATION Pre Lab Questions the amounts of materials that will be used from the experimental section above) H2SO4 + Na2Cr207 2H20- H2O, A Molecular Weight Theoretical yield amount moles on (if applicable) Equivalents 2. Look up the melting point for p-nitrobenzoic acid and record the reference. 3. What color change is expected to be observed in the reaction? Explain why. CHROMIC ACID OXIDATION Experimental Procedure: Part I: Synthesis of p-nitrobenzoic Acid 1. Under the hood, add 0.400 g...
Need help on providing reactions that describe the acid-base extraction and neutralization processes used in this exper...
Need help on providing reactions that describe the acid-base
extraction and neutralization processes used in this experiment.
Provide a statement of solubility of each starting material and
product.
The experiment to be performed this week involves liquid-liquid extraction using a separatory funnel. Read chapter 15 in Zubrick to familiarize yourself with the use of the glassware for extraction and washing. Acid/Base Extraction Liquid-liquid extraction is a technique that can be used to physically separate two substances that have varying solubility...
Chem 2582L Calculation Worksheet OH + 2 но он "H₂C a 0125 01331 0 - 6...
Chem 2582L Calculation Worksheet OH + 2 но он "H₂C a 0125 01331 0 - 6 C-5x, 7. I'llg/ml = m .7 m = 7.779 Suppose: 1. A chemist starts with 7 ml of ethylene glycol as the limiting reagent 2. 2 equivalents of acetyl is needed for every equivalent of cthyine glycol 3. The chemist actually synthesized 15.5 g of crude diacetyl ethylene glycol 4. After purification 14.4 g of diacetyl ethylene glycol were isolated Mali ODD Mmales Ethylene...
Given that the final mass of acetaminophen crystals= 0.320g, - What is the percent recovery or...
Given that the final mass of acetaminophen crystals=
0.320g,
- What is the percent recovery or your product?
- If this is above 100%, propose reasons for this. If not,
list possible sources for the loss lf product.
- What is the melting point (mp) of your product? The expected
mp is 170C. What can you say about the purity of your
product?
The
weight of the acetaminophen tablet is 500mg as stated in
step#15.
133 Experiment 11 Isolation of...
help with identifiying each unknown in extraction and washing experiment. the ir spectra are given below,...
help with identifiying each unknown in extraction and washing
experiment. the ir spectra are given below, along with data, and
the lab sheet is attached.
Neutral Solid Primary amine (Aniline) 3403cm - NE presence Transmittance 60 3258cm 1 streren NOUD Streich 50 Ctretcher strator NH2 aromatto 11 NO2 aring 2-nitroaniline K LILI 3600 3200 2800 2400 2000 1800 1600 Wavenumber cm-1 1400 1200 1000 800 600 Basic Solid primary amine Transmittance I NH2 Stretch p-acetvianiline 70 60 CS HG NO...
Experiment Write Up Proposal You will write up a synthesis procedure for one reaction that could...
Experiment Write Up Proposal You will write up a synthesis procedure for one reaction that could be potentially run in a face- to-face Chem 2321 lab session. Your proposal will include an introduction and procedure. The procedure will include step-by-step instructions for running the reaction (including reaction monitoring), work-up. (product isolation and purification), and analysis (characterization). You will need to include sample calculations for percent yield and provide sample spectra analysis. You must upload your proposal as a single document...
comment on the effectiveness of my extraction and
purification, state and use data especially percent recovery and
melting point for lab discussion.
Genzorc aad P-Dich borobencene Islared Grud Po-z Tral 1-meting Pail 9. 6-122.8C 52.4-548 53.2- 55.8C 12.3-123.6 Percent Recovery Calculation: (show one sample calculation for each) Crude masS % Recovery x 100% Initial masS p-Dichlorobenzene Benzoic Acid Purified mass x 100% % Recovery Crude masS 97.21 P-Dichlorobenzene Benzoic Acid Purified mass x 100% % Recovery Initial masS 5 p-Dichlorobenzene...
comment on the effectiveness of my extraction and
purification, state and use data especially percent recovery and
melting point for lab discussion.
Genzorc aad P-Dich borobencene Islared Grud Po-z Tral 1-meting Pail 9. 6-122.8C 52.4-548 53.2- 55.8C 12.3-123.6 Percent Recovery Calculation: (show one sample calculation for each) Crude masS % Recovery x 100% Initial masS p-Dichlorobenzene Benzoic Acid Purified mass x 100% % Recovery Crude masS 97.21 P-Dichlorobenzene Benzoic Acid Purified mass x 100% % Recovery Initial masS 5 p-Dichlorobenzene...
need help with the empty spaces please!
Remote_Chromic_Acid_Oxidation_Data(1).docx Data Sheet Name__Last-First Date_03/23/2020 Partner(s) Name(s): N/A General Observations: Mass of p-Nitrotoluene used = 0.147 g Part I: Synthesis of p-nitrobenzoic Acid Mass of filter paper: _0.320 g Mass of filter paper with crude product:_0.451 g. Mass of crude product:. 136 .4519 Crude percent yield: Melting point range of crude product: _221-232 °C Part II: Purification of p-nitrobenzoic Acid Mass of filter paper:__0.288 g _ - 2884 Mass of filter paper with...
please can you tell me how the person calculated the percent
recovery and if it's correct ???
Reactions: Reaction of Benzoic Acid with base Data and Calculations: Measurements Benzoic acid Benzocaine 9-Fluorenone Acid, Base, Neutral 0.052g 52mg 0.057g- 57mg 0.051g 51mg substances initial mass. Culture tube initial 11.431g 11.431g 11.431g Culture tube final 11.578g 11.578g 11.578g Aluminum-weighing dish 0.413g 0.415g initial Aluminum-weighing dish 0.429g 0.431g Final Recovered mass 0.016g 16mg 0.018g 18mg 0.147g 1.47mg Percentage Recovery 32.5% 35.6% 31.8% Melting...
CHROMIC ACID OXIDATION Pre Lab Questions the amounts of materials that will be used from the experimental section above) H2SO4 + Na2Cr207 2H20- H2O, A Molecular Weight Theoretical yield amount moles on (if applicable) Equivalents 2. Look up the melting point for p-nitrobenzoic acid and record the reference. 3. What color change is expected to be observed in the reaction? Explain why. CHROMIC ACID OXIDATION Experimental Procedure: Part I: Synthesis of p-nitrobenzoic Acid 1. Under the hood, add 0.400 g...
Need help on providing reactions that describe the acid-base
extraction and neutralization processes used in this experiment.
Provide a statement of solubility of each starting material and
product.
The experiment to be performed this week involves liquid-liquid extraction using a separatory funnel. Read chapter 15 in Zubrick to familiarize yourself with the use of the glassware for extraction and washing. Acid/Base Extraction Liquid-liquid extraction is a technique that can be used to physically separate two substances that have varying solubility...
Chem 2582L Calculation Worksheet OH + 2 но он "H₂C a 0125 01331 0 - 6 C-5x, 7. I'llg/ml = m .7 m = 7.779 Suppose: 1. A chemist starts with 7 ml of ethylene glycol as the limiting reagent 2. 2 equivalents of acetyl is needed for every equivalent of cthyine glycol 3. The chemist actually synthesized 15.5 g of crude diacetyl ethylene glycol 4. After purification 14.4 g of diacetyl ethylene glycol were isolated Mali ODD Mmales Ethylene...
Given that the final mass of acetaminophen crystals=
0.320g,
- What is the percent recovery or your product?
- If this is above 100%, propose reasons for this. If not,
list possible sources for the loss lf product.
- What is the melting point (mp) of your product? The expected
mp is 170C. What can you say about the purity of your
product?
The
weight of the acetaminophen tablet is 500mg as stated in
step#15.
133 Experiment 11 Isolation of...
help with identifiying each unknown in extraction and washing
experiment. the ir spectra are given below, along with data, and
the lab sheet is attached.
Neutral Solid Primary amine (Aniline) 3403cm - NE presence Transmittance 60 3258cm 1 streren NOUD Streich 50 Ctretcher strator NH2 aromatto 11 NO2 aring 2-nitroaniline K LILI 3600 3200 2800 2400 2000 1800 1600 Wavenumber cm-1 1400 1200 1000 800 600 Basic Solid primary amine Transmittance I NH2 Stretch p-acetvianiline 70 60 CS HG NO...
Experiment Write Up Proposal You will write up a synthesis procedure for one reaction that could be potentially run in a face- to-face Chem 2321 lab session. Your proposal will include an introduction and procedure. The procedure will include step-by-step instructions for running the reaction (including reaction monitoring), work-up. (product isolation and purification), and analysis (characterization). You will need to include sample calculations for percent yield and provide sample spectra analysis. You must upload your proposal as a single document...
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