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MCAT Organic Chemistry (Princeton Review) QUESTIONS AND ANSWERS| GRADED A
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MCAT Organic Chemistry (Princeton Review) Saturated Correct Answer: -Max number of H atoms attached -Single bonds Saturation Equation Correct Answer: CnH2n+2 Unsaturated Correct Answer: -Double bonds, triple bonds, ring structures Degrees of Unsaturation (DOU) Correct Answer: -DOU...

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  • July 6, 2022
  • 11
  • 2021/2022
  • Exam (elaborations)
  • Questions & answers

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  • mcat organic chemistry
  • saturated
  • mcat organic chemistry princeton review questions and answers| graded a
  • mcat organic chemistry princeton review
  • mcat organic chemistry princeton review

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MCAT Organic Chemistry (Princeton Review)
Saturated Correct Answer: -Max number of H atoms attached
-Single bonds

Saturation Equation Correct Answer: CnH2n+2

Unsaturated Correct Answer: -Double bonds, triple bonds, ring structures

Degrees of Unsaturation (DOU) Correct Answer: -DOU = sum of π bonds and rings
-1 DOU = 1 π bond or ring

Unstable Molecules Correct Answer: -High energy
-Reactive with their environment
-Shorter lifetimes

Stable Molecules Correct Answer: -Low energy
-Less reactive with their environment
-Longer lifetimes

Ideal Bond Angles Correct Answer: 109.5

Ring Strain Correct Answer: -Bond angles < 109.5
-Destabilizes ring
-Weakens C-C bonds
-Increase reactivity

Electronegative Substituents Correct Answer: -Withdraw electron density (oxygen, halogens)

Electropositive Substituents Correct Answer: -Donate electron density (alkyl groups)

Resonance Stability Correct Answer: -Occurs due to the delocalization of electrons
-pos/neg charge or lone pair e- adjacent to π bond

Bronsted-Lowry Acids Correct Answer: -Donate H+ and leave behind conjugate base
-More stable base = more acidic conjugate acid

4 Factors that affect acid strength by altering conjugate base stability Correct Answer: 1.)
Electronegativity
2.) Resonance
3.) Induction

Nucleophiles (Nu-) Correct Answer: -Nucleus loving
-Electron rich
-Full or partial neg. charge
-Donates pair of electrons and forms covalent bond
-Lewis base

, -Nucleophile "attacks" electrophile

Lewis Base Correct Answer: Donates pair of electrons

Nucleophile Trends Correct Answer: 1.) Charge: negative charge makes stronger nucleophile
2.) Electronegativity: nucleophilicity increases as electronegativity decreases
3.) Size: nucleophilicity increases as size increases

Nucleophilicity Trends Correct Answer: -Increase right to left across row
-Increase down a group

Basicity Trends Correct Answer: -Increase right to left across a row
-Increase up a group

Electrophiles Correct Answer: -Electron loving
-Electron deficient
-Full or partial positive charge
-Accepts a pair of electrons
-Lewis acid

Lewis Acid Correct Answer: Accepts pair of electrons

Good Leaving Group Trends Correct Answer: -Stable in solution
-Resonance stabilizes charge
-Weak base (Cl- < Br- < I-)
-Neutral leaving groups are more stable than charged leaving groups

Bad Leaving Group Trends Correct Answer: -Unstable in solution, usually due to their charge
-Strong bases (HO-, RO-, NH2-)
-Acid catalysis (protonation) can make a bad leaving group good
-Hydrogens or alkanes never leaving groups

Isomers Correct Answer: Different compounds with the same molecular formula

Structural (Constitutional) Isomers Correct Answer: -Different atomic connectivity
-Different chemical/physical properties

Conformational Isomers Correct Answer: -Same atomic connectivity
-Differ by rotation about 1 or more σ bonds
-Identical chemical/physical properties
-Cannot be isolated

Cyclohexane Most Stable Conformation Correct Answer: -Chair
-More stable to have larger groups in equatorial position (minimizes steric interactions)

Chirality Correct Answer: -Not superimposable mirror images
-No plane of symmetry

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