chem 2 lab concepts

A

mass

Z

protons

alpha decay

-4 mass (A); -2 protons (Z)

beta decay/beta emission

+0 mass (A); +1 protons (Z)

position emission & electron capture

+0 mass (A); -1 protons (Z)

gamma decay

+0 mass (A); +0 protons (Z)

wut stops alpha

sheet of paper

wut stops beta

sheet of metal

wut stops gamma

thick concrete

zero order rxn equation

[A]_t = -kt + [A]₀

first order rxn equation

ln[A]_t = -kt + ln[A]₀

second order rxn equation

1/[A]_t= -kt + 1/[A]₀

[A]₀

initial [ ]

t

time elapsed

[A]_t

[ ] of the react @ any time

k

rate constant

zero order half life

t1/2 = [A]₀ / 2k

first order half life

t_1/2 = ln(2) / k

second order half life

t_1/2 = 1 / k[A]₀

% error

( |actual - theoretical| / theoretical ) * 100

on calibration curve

[ ] is the independent variable (x axis)

micro mL to mL

1000 micro mL = 1 mL

1 × 10^-6 L

1 micro mL

1 × 10^-6 M

1 micro M

K_a

acid dissociation constant

high K_a

strong acid; fully dissociates in water

low K_a

weak acid; doesn’t fully dissociates in water

low K_sp

insoluble

high K_sp

soluble

K_sp

solubility product constant

in cell notation

anode on the left & cathode on the right

FATCAT

from anode to cathode

Q in Nerst equation

[dilute solution] / [concentrated solution]

strong field ligand

low spin; pair first

weak field ligand

high spin; fill orbitals (unpaired)

low delta octahedral

longer lambda absorbed

high delta octahedral

shorter lambda absorbed

violet

400-450 nm

blue

450-500 nm

green

500-550 nm

yellow

550-600 nm

orange

600-650 nm

red

650-700 nm

y in y=mx+b

absorbance

x in y=mx+b

concentration

m in y=mx+b

constant

b in y=mx+b

y-intercept

all sodium salts

are soluble

neutral solution is formed

salts with both strong acid & strong base (cation & anion)

what is neutral for cations

G1 & G2 metals

what is neutral for anions

strong acid anions

if cation strong (base)

basic

if anion strong (acid)

acidic

y=mx+b for thermo

m:S & x:T

black electrode

negative

red electrode

positive

high #E

keep; cathode

oxi agent

accepts e-; reduced e- on right

red agent

donated e-; oxidized; e- on left

coordination #

num. of atoms bonded to central atom

oxi #

degree of oxi/red → charge (?)

environmental hazard

toxic

oxidizing

health hazard

corrosive

flammable

harmful

compressed gas

explosive

bidentate - 2

en, C2O4

polydenate - 6

EDTA,EDTA^4-

ploydentate - 3

dien

polydentate - 5

EDTA^3-