Unit 2 Flashcards by Abby Thelen

Q

3 types of electrolytes

A

-strong, weak, and non electrolytes

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Q

type of mix a solution is

A

-a homogeneous mixture
-seperated physically
-looks uniform

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Q

2 parts of a solution

A

-solvent and solute

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Q

solvent

A

-biggest part
-only 1

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Q

solute

A

-smaller amounts
-1 or more

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Q

molarity formula

A

M = mol solute / L solution

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Q

strong electrolytes do what?

A

-ionize or break apart 100%

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Q

3 types of strong electrolytes

A

-strong acids
-strong bases
-soluble salts

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Q

strong electrolyte strong bases are

A

group 1 or 2 metal with an OH

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Q

7 strong electrolyte acids are

A

(aq) - HCl, HBr, HI
HNO3, H2SO4, HClO3, HClO4

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Q

electrolyte definition

A

substance that ionizes in a solution

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Q

weak electrolytes do what?

A

ionize slightly, (5%)

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Q

weak electrolytes have

A

weak acids and bases

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Q

dilution equation

A

M1V1 = M2V2

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Q

ideal gas law

A

PV=nRT

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Q

rate formulas

Study These Flashcards

A

rate 1 / rate 2 = square root of MM 2 / MM1

Q

pressure and volume equation

Study These Flashcards

A

P1V1 = P2V2

Q

volume and temperature equation

Study These Flashcards

A

v1/t1 = v2/t2

Q

pressure and temperature equation

Study These Flashcards

A

p1/t1 = p2/t2

Q

volume and moles equation

Study These Flashcards

A

v1/n1 = v2/n2

Q

the only equation with density

Study These Flashcards

A

MM = (DRT / P)
MM = in g/mol from PT
T = K

Q

combined gas law

Study These Flashcards

A

P1V1/T1 = P2V2/T2

Q

1 atm = how many mmHg or torr?

Study These Flashcards

A

760 mmHg or torr

Q

change in energy equation

Study These Flashcards

A

E = q + w
NEED SIGNS

Heat of a reaction equation

H = Hproducts - Hreactantd

reminders for heat of a reaction equation

-products minus reactants -diatomic and elements = 0 -use backside of PT for compounds

calirometry equation

q = c • m • T (change in temp)

components of calirometry equation and their meanings

q = heat c = capacity m = mass T = change in temp in CELSIUS

when is Kelvin used for temperature?

only in GASSES

change in energy equation reminders

-NEED SIGNS -2 (-) #’s = - triangle E

what do gasses together make?

physical mixtures

gas density vs liquid density

gas = g/L liquid = g/mL

volume of gas at STP

V = mol • (22.4L/mol)

2 aqueous equations coming together make a ?

(s)

do (s) break up into ions?

no, only aq

all thermodynamic qualities (q,w,E,H) must have…

sign + or - # and unit correct sig figs

when do gasses behave ideally

low pressures, high temps, low molar masses

2 R values

0.0826 L•atm / mol •K 62.36 L • torr / mol • K