Chem 233 Study guides, Class notes & Summaries

In the experiment, you added water to the reaction vessel after the reaction was complete, but we did not discuss why. Based on what happened after adding the water, which of the following is the reason for the addition of water? a) lower the solubility of the product in solution so it precipitated out b) increase the solubility of the product in solution so it precipitated out c) lower the solubility of the product in solution so it stayed in solution d) increase the solubility of the pr...

mass spectrometrysorts ions based on mass/charge ratio ionization typeselectron ionization (EI or hard ionization) electrospray ionization (CI or soft ionization) infared spectroscopyIR study of interaction between matter and electromagnetic radiation (EMR, light). IR radiation causes different bonds to vibrate IR spectra OH or NH IR spectra >3000triple CH bond IR spectra <3000-CH IR spectra 2720O=CH

CHEM 233 GENERAL ORGANIC CHEMISTRY FALL FINAL EXAM Q & A 2023CHEM 233 GENERAL ORGANIC CHEMISTRY FALL FINAL EXAM Q & A 2023CHEM 233 GENERAL ORGANIC CHEMISTRY FALL FINAL EXAM Q & A 2023

Mass spectrometry correct answer: Technique that sorts ions based on their mass to charge ratio Electron ionization correct answer: -Also known as hard ionization -Very energetic, produces fragments ("daughter ions") Electrospray ionization correct answer: -Also known as soft ionization -Species remains intact, form ions by attaching H+ (+1 amu) or Na+ (+23 amu) 3:1 correct answer: Mass spectrometry ratio that appears for Cl 1:1 correct answer: Mass spectrometry ratio that a...

CHEM 233L FINAL QUIZZES & ANS..

Radius of Atoms trendRadius increases the more southwest on the periodic table and decreases the more northeast on the periodic table. (Fluorine tiny, francium huge) Ionic RadiusDecreases with loss of electrons (weaker bond, longer), increases with gain of electrons (stronger bond, shorter) ionization energy trendEnergy required to take electrons away. Increases the more northeast, decreases the more southwest. Electron Affinitythe energy change associated with the addition of an electr...

CHEM 233 GENERAL ORGANIC CHEMISTRY FALL FINAL EXAM Q & A 2023CHEM 233 GENERAL ORGANIC CHEMISTRY FALL FINAL EXAM Q & A 2023CHEM 233 GENERAL ORGANIC CHEMISTRY FALL FINAL EXAM Q & A 2023

Purpose of Lab 10 Phenacetin is prepared by Williamson Ether Synthesis using acetaminophen (an ingredient in Tylenol), and iodoethane in the presence of a base. The product is purified by recrystallization and characterized by TLC, melting point analysis, and IR and NMR spectroscopies. (10) 2-butanone safety considerations Is highly flammable. Dispose of in appropriately labeled waste bottles. (10) Ethyl acetate safety considerations Is highly flammable. Dispose of in appropriately l...

OCHEM 233/235 LAB FINAL WVU QUESTIONS WITH COMPLETE ANSWERS.

When placed inside of a magnetic field, NMR active nuclei act in what way?They align mostly in the same direction as the applied magnetic field When placed inside of a magnetic field, the magnetic field that electrons generate aligns in the opposite direction of the applied magnetic field. This has what effect on the nucleus the electrons are around?The electrons shield the nucleus from the magnetic field The nitrogen in the compound below has what kind of effect on nearby hydrogens?Di...