CHEM 331

Oregon State University

Here are the best resources to pass CHEM 331. Find CHEM 331 study guides, notes, assignments, and much more.

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O Chem 331 Exam 4 Final Exam Questions and All Correct Answers.
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How to make C-C bond for synthesis problems - Answer start with alkyne deprotonate (add strong base, usually NaNH2) add alkyl halide How to make cis alkene from alkyne - Answer H2 and Lindlars catalyst How to make trans alkene from alkyne - Answer Na metal in liquid NH3 alkene hydrogenation - Answer - h2 and metal (pd/pt) -break pi bond, add H to each carbon -syn addition alkene hydrohalogenation-- just HX - Answer - HX (HCl, HBr) - break pi bond, ...
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Chem 331 Lab Practical 1 Questions and All Correct Answers.
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What are the four exposure routes by which harmful chemicals can enter the body? - Answer Inhalation, injection, absorption and ingestion You should never heat a _____ ______ with a burner flame - Answer graduated cylinder How to you properly dilute concentrated acids and bases? - Answer By pouring the reagent into water while stirring carefully and constantly. Never pour water into concentrated acid (add acid) and never add concentrated acid to concentrated base of vice ...
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Chem 331 Lab Final Exam and All Correct Answers 2025-2026 Updated.
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When determining the melting point of a compound, which of the following may cause the observed melting point to differ from the accepted literature melting point? - Answer Impurities present in the sample will affect the melting point. Residual solvent or moisture in the sample will affect the melting point. Rapid heating of the sample will affect the observed melting point. Impurities present in the sample will affect the melting point. In this experiment, you will have an organic ...
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Chem 331 Final exam Questions and All Correct Answers 2025-2026 Updated.
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Slaters Rule - Answer same n = 0.35 n-1 = 0.85 all others = 1 Slaters Rule - Answer same n = 0.35 n-1 = 0.85 all others = 1 IR active vibration - Answer Must give rise to a change in the dipole moment of the molecule Raman active vibration - Answer Must give rise to a change in the polarizability of the molecule Determining hybridization - Answer # of atoms + # of lone pairs =x if x= 4 --> sp3 x=3 --> sp2 X=2 --> sp Cubic Close Packing...
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CHEM 331 Exam 1 Material Test Questions Fully Solved.
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Constitutional isomers - Answer share the same molecular formula but have different connectivity of atoms and different physical properties Lone pairs - Answer a pair of unshared electrons valencene electrons - Answer A formal charge occurs when an atom does not exhibit the appropriate number of _______________. individual atom, entire molecule - Answer An atomic orbital is a region of space associated with _____________ while a molecular orbital is a region of s...
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CH 331 (OSU-Myles) Study Guide Test Questions Fully Solved.
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Hydroboration-Oxidation of Internal Alkynes - Answer 1. BH3/THF (BH2 - electrophile, ant Markovnikov / H - nucleophile) 2. NaOH, H2O2, H2O (break BH2 bond --> OH) -Enol-Minor -Ketone-Major Unsymmetrical (BH2 attacks less hindered side) Symmetrical (BH2 attacks either side) Addition of HI and HBr to alkenes - Answer - Markovnikov for H+ - Multi Step - Potential carbocation rearrangements - Regioselectivity (3° - 1° complete regioselective) (3° - 2° regioselec...
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CH 331 Midterm Exam and All Correct Answers.
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Bond - Answer An attractive force between two atom or between ions Ionic bond - Answer Formed when there is a transfer of electrons, causing one atom to become a positively charged ions and the other to become a negatively charged ion. Electrostatic attractive force between particles of opposite charge. Covalent bond - Answer a bond formed as a result of sharing electrons. Electronegativity - Answer Measure of the ability of an atom to pull the bonding electrons ...
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CH 331 Final- OSU Final Exam Questions and All Correct Answers 2025-2026 Updated.
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ionic bond - Answer -metal with nonmetal -transfer of electrons -positively charged with negatively charged (LiCl, NaF, CaF2) -polar covalent bond - Answer -nonmetal with nonmental -sharing of electrons -ex) F2, H2, HCl, H2O, NH3, CH4, etc -non-polar (0-0.5) and polar (0.5-2) greater diff in EN - Answer more polar the bond dipole - Answer positive goes on smaller number formal charges - Answer number of valence electrons - number of lone pair elect...
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