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Exam 1 Flashcards

1
Q

electronegativity of C

A

2.5

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2
Q

electronegativity of N

A

3.0

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3
Q

electronegativity of H

A

2.1

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4
Q

electronegativity of O

A

3.5

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5
Q

nonpolar criteria

A

.4 or less

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6
Q

polar criteria

A

.5 or more

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7
Q

where on periodic table is most electronegative

A

top right is increasing electronegativity

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8
Q

pi bond

A

additional bonds on a double or triple
-double has 1 pi bonds
-triple has 2 pi bonds

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9
Q

sigma bond

A

first bond between 2 atoms

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10
Q

formal charge equation

A

FC= ve - (bonds + dots)

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11
Q

orbital if 4 things attached (bonds or lone pairs)

A

-sp3
-tetrahedral

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12
Q

orbital if 3 things attached (bonds or lone pairs)

A

-sp2
-trigonal planar

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13
Q

orbital if 2 things attached (bonds or lone pairs)

A

-sp
-linear

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14
Q

BP/MP prediction

A

stronger molecular attractions have higher melting + boiling points

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15
Q

intermolecular attractions strength order

A
  1. ionic
  2. hydrogen
  3. dipole-dipole
  4. london forces
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16
Q

ionic attraction

A

-strongest
-metal + nonmetal

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17
Q

metal and nonmetal on periodic table

A

metal on left (except H) and nonmetal on right
-“m comes before n”

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18
Q

dipole-dipole

A

-partial positive is attracted to partial negative
-has to be polar

19
Q

hydrogen bond

A

-cannot have a C in it
-ex. O-H-:O, N-H-:N, O-H-:N, N-H-:O

20
Q

london forces

A

-look for “heaviest” molecule
-ex. C>H

21
Q

alkane mnemonic

A

1st vowel single bond

22
Q

alkyne mnemonic

A

3rd(ish) vowel triple bond

22
Q

alkene mnemonic

A

2nd vowel double bond

23
Q

ether mnemonic

A

either are carbon

23
Q

arene mnemonic

24
Q

ester mnemonic

A

ester likes to be on ccoc

25
Q

amide mnemonic

A

N amid cco

26
Q

amine mnemonic

27
Q

imine mnemonic

A

i mean… its an N and three C’s

28
Q

nitrile mnemonic

A

triple nitrile brew

29
Q

alcohol mnemonic

A

OH we’ve got alcohol

30
Q

halide mnemonic

31
Q

ketone mnemonic

31
Q

aldehyde mnemonic

A

ketone w an H

32
Q

acid chloride mnemonic

A

ketone w a chloride

33
Q

carboxylic acid mnemonic

A

acid > alcohol

34
Q

carboxylic acid anhydride mnemonic

A

anhydride is BIG

35
Q

stereoisomers

A

-same molecular formula
-same atom sequence
-differ in 3 dimensional orientations of atoms in space
-

36
Q

conformational isomers

A

different rotation of conformation is only different, everything else is same
-trans1-3 + trans1-3

37
Q

structural isomers

A

-same molecular formula, but connected in different ways
ex. trans1-4, cis 1,3

38
Q

steric strain

39
Q

torsional strain

A

eclipsed bonds

40
Q

angle strain

A

caused by non ideal angles

OChem (14 decks)

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