rates

Question 1

collision theory

Answer 1

reactant molecules must collide with sufficient energy and the correct orientation for a reaction to occur (bounce off otherwise)

Question 2

area under curve for maxwell boltzmann distribution

Answer 2

of particles in sample

Question 3

Ea

Answer 3

minimum amount of energy required for a reaction to occur

Question 4

ROR key words

Answer 4

PER UNIT TIME

Question 5

factors affecting ror: fq

Answer 5

surface area
concentration
pressure

Question 6

factors affecting ror: proportion

Answer 6

temperature
catalyst

Question 7

increase pressure with equal gas moles

Answer 7

bc equal gas moles, system cannot partially oppose therefore no effect on yield

Question 8

increase temp favours higher ror bc

Answer 8

particles have more Ke tf collide with more force

Question 9

when describing ror on graphs talk about

Answer 9

steepness of curves representing ror

Question 10

improve accuracy of calculating ror by

Answer 10

measure pH
video record and stop video every certain time period

Question 11

Kc represents

Answer 11

extent of reaction
> 10^4 reaction goes to completion
< 10^-4 reaction negligible extent only

Question 12

equilibrium =

Answer 12

rate of forward and reverse reaction are equal

Question 13

le chatellier principle key words

Answer 13

tendency to PARTIALLY OPPOSE change

Question 14

what effect does adding inert gas have

Answer 14

NO EFFECT

Question 15

what affects Kc

Answer 15

TEMPERATURE

Question 16

How to determine theroretical voltage produced by a single cell

Answer 16

(NOT DEPENDENT ON BALANCING NUMBERS)
E(big) - E(small)

Question 17

what effects pH

Answer 17

ONLY H+ IONS (not OH)

Question 18

what effects neautrality/ making something acidic/basic

Answer 18

charge/ proportion of OH to H+

You can have a low pH hw the system still be neutral

Question 19

effect on temperture on Kc value

Answer 19

exothermic: as t increases -> k decreases
endothermic: as t increases -> k increases

Question 20

rate of reaction

Answer 20

change in concn of a reactant or pruduct per unit time

Question 21

catalysts

Answer 21

speed up chemical reactions, providing an alternative reaction pathway by lowing activation energy

Question 22

what does the equilibrium constant measure

Answer 22

the extent of the reaction

Question 23

what is the K value if the reaction goes to completion

Answer 23

K> 10 ^4

Question 23

what is the K value if reation occurs to a neglibible extent

Answer 23

K< 10^-4

Question 24

effect on Kc if equation is reversed

Answer 24

recipical of K

Question 25

effect on Kc if equation coefficients are doubled

Answer 25

K ^2

Question 26

effect on K if co-efficients are halved

Answer 26

K ^1/2

Question 27

effect on dilutions on equilibrium

Answer 27

dilution -> decrease concentration -> favour side with more aqu moles

hw this does not make solution more intense bc already diluted