Chem001B Midterm2

What type of i value is for fastest evaporation

A lower i value

This means it separates the most, if tie, multiply by molarity and pick lowest number

What type of i value is best for fastest freezing

A lower i value

This means if it separates the least, if tie, multiply by molarity and pick lowest number

q = mcat

What are units

q = joules

Temp = Celsius

What are units of ∏=iMRT

∏ = atm

Temp = kelvin

R = 0.0821

What are units of q = n∆Hvap

q = joules

∆Hvap = joules/mol

What are units in

ln(P1/P2) = [ΔHvap/R][1/T2 - 1/T1]

ΔHvap = joules/mol

R = 0.0821

temp = kelvin

Under what is q = ΔH

Constant pressure

Positive deviation raoults law

Molecules do not mix well

Negative deviation raoults law

Molecules do mix well

Hypertonic

saltier outside cell

Hypotonic

saltier inside cell

What is lattice energy

energy to separate molecules

Can molality be negative

hell no

How to decrease vapor pressure

more ions

how to increase boiling point

add more ions

How to lower freezing point

Add more ions

Is bondbreaking endo or exothermic

endothermic,

is bond making endo or exothermic

exothermic

Relationship between temperature and vapor pressure

Vapor pressure increases with temperature