CHEM 241

Drexel University

Here are the best resources to pass CHEM 241. Find CHEM 241 study guides, notes, assignments, and much more.

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Chem 241 Acid/Base & Solvent/Solvent Extraction Questions And Answers Latest Update 2024
  • Chem 241 Acid/Base & Solvent/Solvent Extraction Questions And Answers Latest Update 2024

  • Exam (elaborations) • 11 pages • 2024
  • Fraction of Dissociation - correct answers the fraction of the acid in the conjugate base form (A-). [A-] / [A-]+[HA] or [A-]/F Fraction of Association - correct answers the fraction of the base in the conjugate acid form [BH+]. [BH+] / [BH+]+[B] or [BH+]/F Strong Acids - correct answers HClO4, H2SO4, HNO3, HCl, HI, HBr Strong Bases - correct answers LiOH, NaOH, KOH, RbOH, CsOH Ca(OH)2, Mg(OH)2, Ba(OH)2, Sr(OH)2 What should I do if I have a dilute strong acid or base? (10e-6<F...
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Organic Chemistry 241 Exam Questions And Answers Latest Update 2024
  • Organic Chemistry 241 Exam Questions And Answers Latest Update 2024

  • Exam (elaborations) • 15 pages • 2024
  • If you add more than a minimum amount of ethanol when recrysallizing, how does that affect % recovery - correct answers Less crystals, % recovery decreases List 2 features of the mp of an impure compound - correct answers -Lower -Broad range List 2 features of the mp of a pure compound - correct answers -correct mp -narrow range 2 Features of a good solvent for recrystallization - correct answers -insoluble at colder temps -soluble at hot temps -All impurities soluble at all temper...
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Organic Chemistry-CHEM 241- FA_ Questions And Answers Latest Update 2024
  • Organic Chemistry-CHEM 241- FA_ Questions And Answers Latest Update 2024

  • Exam (elaborations) • 1 pages • 2024
  • Alkanes - correct answers - Single bond -Chemical structure- CnH2n+2 First four alkanes - correct answers -Methane(CH4) -Ethane (c2H6) -Propane(C3H8) -Butane(C4H10) Alkenes and Alkynes - correct answers -contains double bonds Alkynes - correct answers -contains triple bonds Alcohols - correct
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Chem 241 Lab Final Exam Questions And Answers Latest Update 2024
  • Chem 241 Lab Final Exam Questions And Answers Latest Update 2024

  • Exam (elaborations) • 10 pages • 2024
  • the importance of TMS (CH3)4Si - correct answers -TMS is extremely shielded (more so than most organics) -1 sharp spike at 0, due to 12 equivalent protons -chem. Inert -low BP, easily removed Beer's Law - correct answers A=abc A=absorbance a=molar absorptivity b=path length c=concentration know how to find c= if λ=max then a is constant if a standardized cuvette is used b is constant if A, b, and a are known, then c can be calculated, but only if all those criteria are met! (A ...
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Functional Groups Chem 241 Quiz 1 Questions And Answers Latest Update 2024
  • Functional Groups Chem 241 Quiz 1 Questions And Answers Latest Update 2024

  • Exam (elaborations) • 4 pages • 2024
  • alkane single bonds, sp3 carbons alkene double bond, sp2 carbons alkyne triple bond, sp carbons alcohol R-OH (hydroxy
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Chem 241 Midterm 2 Questions And Answers Latest Update 2024
  • Chem 241 Midterm 2 Questions And Answers Latest Update 2024

  • Exam (elaborations) • 10 pages • 2024
  • what are the two forms of hydrogen and how can we determine which it is within a bond? - correct answers Hydrogen can either be acidic (+) or hydridic (-). we can determine which it is in a certain bond by looking at the dipole and electronegativity of both atoms. what is an anion? - correct answers an atom with more electrons and a negative charge what is a cation? - correct answers an atom with less electrons (missing some) and a positive charge describe the radius of neutral atoms, c...
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Chem 241 Exam 4 Questions And Answers Latest Update 2024
  • Chem 241 Exam 4 Questions And Answers Latest Update 2024

  • Exam (elaborations) • 1 pages • 2024
  • oxidation - correct answers loss of electrons reduction - correct answers gain of electrons current - correct answers the greater the voltage, the more _____ will flow galvanic - correct answers _____ cell uses spontaneous chemical reaction to generate electricity salt bridge - correct answers _____ ____ maintains electroneutrality throughout the cell calomel, silver silver chloride - correct answers Two reference electrodes _____ using KCl and ____ ____ _____ using AgCl and KCl
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UNC Chem 241 FINAL Questions And Answers Latest Update 2024
  • UNC Chem 241 FINAL Questions And Answers Latest Update 2024

  • Exam (elaborations) • 18 pages • 2024
  • Increase N - correct answers 1) Increase length of column 2) Optimize flow rate (Ux) to minimize H 3) Smaller packing bead diameter, uniform packing (A-term) 4) Thinner SP layer (less C term) 5) Open Tubular Liquid Chromo (No A) (A: more sensitive & resolution, fit more plate (N) shorter analysis D: small capacity) Absorption Chromatography - correct answers SP: Solid MP: Liquid or Gas Solutes move at different rates according to the forces of attraction to the stationary phase Parti...
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CHEM 241 Final (Prelab Questions) Questions And Answers Latest Update 2024
  • CHEM 241 Final (Prelab Questions) Questions And Answers Latest Update 2024

  • Exam (elaborations) • 8 pages • 2024
  • If you are unsure which layer of your separatory funnel is the organic layer and which is the aqueous layer, which of these is the safest way to figure it out? - 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) How do you know when you have used a sufficient amount of sodium sulfate? - correct answers When some of the sodium sulfate is powdery or free flowing When should you throw out the layer from the ...
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Chem 241 Exam 2: Analytical Separations Questions And Answers Latest Update 2024
  • Chem 241 Exam 2: Analytical Separations Questions And Answers Latest Update 2024

  • Exam (elaborations) • 6 pages • 2024
  • Extraction - correct answers The physical transfer of a solute from one phase to another Goals of separation - correct answers 100% recovery and 100% purity Precipitation - correct answers Liquid to solid Solvent-solvent extraction - correct answers Solvent 1 to solvent 2 Distillation - correct answers Liquid to gas Sublimation - correct answers Gas to solid Distribution constant: KD= - correct answers [S]org/[S]aq Which phase is on top: aqueous or organic? - correct answers...
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