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CHEM 241 Separations Correct Answers Latest Update
solvent-solvent extraction - correct answers solute is partitioning between two layers based on solubility and polarity Partition coefficient K - correct answers [S]org/[S]aq q^n=(V1/(V1+KV2)^n - correct answers q-fraction of solute left in V1 V1-volume of solvent being extracted V2-volume of solvent used to extract K-partition coefficient m-total moles of solute 1 big extraction vs many small extractions - correct answers many small extractions are better than 1 small extraction ...
- Exam (elaborations)
- • 17 pages •
solvent-solvent extraction - correct answers solute is partitioning between two layers based on solubility and polarity Partition coefficient K - correct answers [S]org/[S]aq q^n=(V1/(V1+KV2)^n - correct answers q-fraction of solute left in V1 V1-volume of solvent being extracted V2-volume of solvent used to extract K-partition coefficient m-total moles of solute 1 big extraction vs many small extractions - correct answers many small extractions are better than 1 small extraction ...
CHEM 241 Acid-Base Video Correct Answers Latest Update
What acid is the primary catalyst in the making of the most explosives used in North America? - correct answers Nitric Acid What is ANFO? - correct answers Ammonium Nitrate Fuel Oil What type of explosive is used mainly for military purposes? - correct answers RDX What is most nitric acid used to produce? - correct answers Ammonium Nitrate Fertilizer Where was the catastrophic nitric acid explosion of 1947? - correct answers Texas City, TX What chemical is produced in the largest ...
- Exam (elaborations)
- • 4 pages •
What acid is the primary catalyst in the making of the most explosives used in North America? - correct answers Nitric Acid What is ANFO? - correct answers Ammonium Nitrate Fuel Oil What type of explosive is used mainly for military purposes? - correct answers RDX What is most nitric acid used to produce? - correct answers Ammonium Nitrate Fertilizer Where was the catastrophic nitric acid explosion of 1947? - correct answers Texas City, TX What chemical is produced in the largest ...
Chem 241 Reactions Correct Answers Latest Update
Lab 3 Acid Base Extraction: Carboxylic Acid reactants (in order) - correct answers NaOH, HCl Lab 3 Acid Base Extraction: Amine reactants (in order) - correct answers HCl, NaOH Lab 5 Friedal-Crafts Acylation Reactants - correct answers ferrocene, acetyl chloride, aluminum chloride, methylene chloride Lab 5 Friedal-Crafts Acylation Products - correct answers ferrocene, monoacetylferrocene, diacetylferrocene Lab 6 Reactivity of Aromatic Compounds Reactants - correct answers anisole, ani...
- Exam (elaborations)
- • 2 pages •
Lab 3 Acid Base Extraction: Carboxylic Acid reactants (in order) - correct answers NaOH, HCl Lab 3 Acid Base Extraction: Amine reactants (in order) - correct answers HCl, NaOH Lab 5 Friedal-Crafts Acylation Reactants - correct answers ferrocene, acetyl chloride, aluminum chloride, methylene chloride Lab 5 Friedal-Crafts Acylation Products - correct answers ferrocene, monoacetylferrocene, diacetylferrocene Lab 6 Reactivity of Aromatic Compounds Reactants - correct answers anisole, ani...
Chem 241 Correct!!
Beer's Law Conditions - correct answers 1. Monochromatic Radiation is passed thru solution 2. Solution is not too concentrated. Typically <0.01M 3. Solution is homogenous 4. Absorbing species is not participating in a concentration dependent equilibirum X-Ray - correct answers Electronic Transitions - Core electrons UV-Vis - correct answers Electronic Transitions - Valence electrons; vibrational; rotational IR - correct answers Vibrational; Rotational Micro - correct answers R...
- Exam (elaborations)
- • 2 pages •
Beer's Law Conditions - correct answers 1. Monochromatic Radiation is passed thru solution 2. Solution is not too concentrated. Typically <0.01M 3. Solution is homogenous 4. Absorbing species is not participating in a concentration dependent equilibirum X-Ray - correct answers Electronic Transitions - Core electrons UV-Vis - correct answers Electronic Transitions - Valence electrons; vibrational; rotational IR - correct answers Vibrational; Rotational Micro - correct answers R...
Chem 241 Exam 1 Review Questions And Answers Latest Update
Purification techniques (discussed so far) - correct answers Extraction Recrystallization Simple/fractional distillation Analysis techniques (discussed so far) - correct answers Mp NMR TLC When to use extraction - correct answers Want to separate compounds based on solubility and density gradient, and you have two immiscible liquids. Why could hexane be used in an extraction with water, but not acetone? - correct answers Acetone is water soluble and hexane isn't; extraction require...
- Exam (elaborations)
- • 5 pages •
Purification techniques (discussed so far) - correct answers Extraction Recrystallization Simple/fractional distillation Analysis techniques (discussed so far) - correct answers Mp NMR TLC When to use extraction - correct answers Want to separate compounds based on solubility and density gradient, and you have two immiscible liquids. Why could hexane be used in an extraction with water, but not acetone? - correct answers Acetone is water soluble and hexane isn't; extraction require...
Chem 241 Safety Quizes Questions And Answers Latest Update
When are you allowed to enter the lab? (Choose all that apply) - correct answers When it is the official lab start time and your TA has arrived, When you are wearing goggles and a lab coat When must you wear safety goggles in lab? (Choose 1) - correct answers At all times, including when using computers in the instrument room What clothing is NOT allowed to be worn in lab? (Choose all that apply) - correct answers Sandals and other open toed shoes, Shorts Which of the following actions ...
- Exam (elaborations)
- • 8 pages •
When are you allowed to enter the lab? (Choose all that apply) - correct answers When it is the official lab start time and your TA has arrived, When you are wearing goggles and a lab coat When must you wear safety goggles in lab? (Choose 1) - correct answers At all times, including when using computers in the instrument room What clothing is NOT allowed to be worn in lab? (Choose all that apply) - correct answers Sandals and other open toed shoes, Shorts Which of the following actions ...
Chem 241- Acid Video Questions And Answers Latest Update
What acid is the primary catalyst in the making of most explosives used in N. America? - correct answers Nitric Acid What is ANFO? - correct answers Ammonium Nitrate Fuel Oil What type of explosive is used mainly for military purposes? - correct answers Rdx What is most nitric acid used to produce? - correct answers Ammonium Nitrate Fertilizer Where was the catastrophic nitric acid explosion of 1947? - correct answers Texas City, Texas What chemical is produced in the largest amt ...
- Exam (elaborations)
- • 4 pages •
What acid is the primary catalyst in the making of most explosives used in N. America? - correct answers Nitric Acid What is ANFO? - correct answers Ammonium Nitrate Fuel Oil What type of explosive is used mainly for military purposes? - correct answers Rdx What is most nitric acid used to produce? - correct answers Ammonium Nitrate Fertilizer Where was the catastrophic nitric acid explosion of 1947? - correct answers Texas City, Texas What chemical is produced in the largest amt ...
Chem 241 Chromatography Questions And Answers Latest Update
What are the benefits of having smaller particles in HPLC? - correct answers high efficiency, higher plate number, higher pressure, shorter run time, better resolution due to uniform flow (reduced A-term, multiple pathway) what is plate height? - correct answers length of column required for 1 equilibration of solute between mobile and stationary phases What are the drawbacks of having smaller particles in HPLC? - correct answers lower detection limit, resistance to solvent flow, increased...
- Exam (elaborations)
- • 23 pages •
What are the benefits of having smaller particles in HPLC? - correct answers high efficiency, higher plate number, higher pressure, shorter run time, better resolution due to uniform flow (reduced A-term, multiple pathway) what is plate height? - correct answers length of column required for 1 equilibration of solute between mobile and stationary phases What are the drawbacks of having smaller particles in HPLC? - correct answers lower detection limit, resistance to solvent flow, increased...
Chem 241 Final Exam Questions And Answers Latest Update
You will use a water bath to heat the contents of your craig tube. Why not just heat the tube directly on the hot plate? - correct answers Rapid heat transfer might crack the tube or cause the solvent to bump If unsure which layer of your separatory funnel is the organic layer and which is the aqueous layer: - correct answers add a few drops of water to each layer to see if the water mixes in (aqueous layer) or forms a separate layer (organic) Whenever you heat liquids, especially near the...
- Exam (elaborations)
- • 10 pages •
You will use a water bath to heat the contents of your craig tube. Why not just heat the tube directly on the hot plate? - correct answers Rapid heat transfer might crack the tube or cause the solvent to bump If unsure which layer of your separatory funnel is the organic layer and which is the aqueous layer: - correct answers add a few drops of water to each layer to see if the water mixes in (aqueous layer) or forms a separate layer (organic) Whenever you heat liquids, especially near the...
Chem 241 Acid Video Questions And Answers Latest Update
nitric acid - correct answers primary acid for making explosives in N. America ANFO - correct answers ammonium nitrate fuel oil RDX - correct answers explosive used mainly for military ammonium nitrate fertilizer - correct answers most nitric acid is used to produce this Texas City, TX - correct answers nitric acid explosion in 1947 sulfuric acid - correct answers acid that is produced in largest amount in the US annually 100x - correct answers pH 1 is how many times more acidi...
- Exam (elaborations)
- • 3 pages •
nitric acid - correct answers primary acid for making explosives in N. America ANFO - correct answers ammonium nitrate fuel oil RDX - correct answers explosive used mainly for military ammonium nitrate fertilizer - correct answers most nitric acid is used to produce this Texas City, TX - correct answers nitric acid explosion in 1947 sulfuric acid - correct answers acid that is produced in largest amount in the US annually 100x - correct answers pH 1 is how many times more acidi...
VA Contractor General Questions Verified answers latest update
MATHNASIUM JOB ASSESSMENT WITH COMPLETE SOLUTIONS 100% 2023/2024
MATHNASIUM JOB ASSESSMENT WITH COMPLETE SOLUTIONS 100% 2023/2024
Nevada Life Insurance Questions and answers latest update
UC Adv Health Assessment - Quiz 1 Questions and answers latest update