C/P Flashcards

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1
Q

converging:

o > f

A

real, inverted image

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2
Q

converging:

o = f

A

no image

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3
Q

converging:

o < f

A

virtual, upright image

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4
Q

converging:

o at infinity

A

image at f

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5
Q

Diverging:

A

image is always virtual and upgright

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6
Q

real images = +

A

for a lens, real images form on the other side of the lens from the object

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7
Q

virtual images = -

A

for a lens, virtual images form on the same side of the lens as the object

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8
Q

Kb =

A

[OH-][HB] / [B-]

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9
Q

Avogadro’s #

A

6.02 x 10^23

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10
Q

Ka =

A

[A-][H+] / [HA]

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11
Q

amino acids that have two chiral centers

A

isoleucine and threonine

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12
Q

anomer

A

diasteromer that differs only at the anomeric carbon

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13
Q

reduction of carboxylic acid to 1 alcohol

A

by BH3

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14
Q

reduction of ketone to 1 alcohol

A

NaBH4

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15
Q

dash means chari conformation

A

down

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16
Q

wedge means chair conformation

A

up

17
Q

positive specific rotation

A

clockwise but S

18
Q

Negative specific rotation

A

counterclockwise but R

19
Q

SN1 reactions react fastest with

A

tertiary then secondary then primary then methyl

20
Q

Longer retention time indicattes

A

greater affinity for the stationary phase and less affinity for the mobile phase

21
Q

Simple distiliation

A

less than 150 degrees but more than 25 degrees apart

22
Q

Vaccum distiliation

A

when they have a boiling point above <150 degrees

23
Q

fractional distilation

A

when they are less than 25 degrees apart

24
Q

gas liquid retention time is based on

A

larger MWs and higher boiling point

25
Q

High-performance liquid chromatographhy

A

small sample sizes

mobile phase under pressure

separates based on polarity

26
Q

what does UV do to electrons

A

excites them by UV light

27
Q

Normal HPLC

A

non polar mobile phase

polar stationary phase

28
Q

Reverse HPLC

A

non polar stationary phase

polar mobile phase

29
Q

Polar mobile phases for HPLC

A

water, methanol, acetone

30
Q

Nonpolar mobile phases for HPLC

A

Hexanes

31
Q

Polar stationaruy phases for HPLC

A

silica