exam 1

Question 1

solution

Answer 1

homogenous mixture

Question 2

solvent

Answer 2

what there’s most of

Question 3

solute

Answer 3

what is getting dissolved/less of

Question 4

soluble

Answer 4

solute readily dissolves in solvent

Question 5

insoluable

Answer 5

only a small part dissolves

Question 6

enthalpy

Answer 6

exothermic/downhill/the drive to maximum randomness/more powerful/sometimes favors solution formation/negative/bond forming

Question 7

entropy

Answer 7

always favors solution forming/endothermic/random order in regard to energy/positive/bond breaking

Question 8

dispersion factors

Answer 8

every molecule

Question 9

dipole dipole

Answer 9

attraction from negative and positive side of polar molecules

Question 10

hydrogen bond

Answer 10

bond with nitrogen and fluorine for nonpolar

Question 11

ion dipole forces

Answer 11

neutral molecule that has a dipole and an ion

Question 12

dipole

Answer 12

bond or molecule that has opposite charges on the ends

Question 13

miscible

Answer 13

substances that can mix in any proportion from a homogeneous mixture

Question 14

non volatile

Answer 14

a substance that does not readily evaporate into a gas under normal conditions

Question 15

molarity

Answer 15

moles of solute and liters of solution

Question 16

molality

Answer 16

moles of solute /kg if solvent

Question 17

temperature

Answer 17

gas: more solvable at cold than hot
solids: varies with solute but mostly higher temps
liquids: more solvable at higher temp

Question 18

molar mass

Answer 18

mass of solute/mass of solvent and solute

Question 19

nonvolatile solute causes

Answer 19

vapor pressure of solution to lower
boiling point of solution to be greater
melting point of solution to be lower
increases osmotic pressure of solution

Question 20

catalyst

Answer 20

increase rate of reactions. consumed early in mechanism and regenerate later.

Question 21

intermediates

Answer 21

generated early consumed later

Question 22

zero order

Answer 22

linear: [a] half life: [a]/2k

Question 23

first order

Answer 23

linear:In[a] half life In[2]/k

Question 24

second order

Answer 24

linear : 1/[a] half life 1/k[a]

Question 25

unimolecular

Answer 25

rearrangement or decomposition k[a]

Question 26

bimolecular

Answer 26

collision k[a][b] or k[a]^2