Lab Exam 1

Question 1

Formulas for Delta G

Answer 1

Delta H - (delta S)(T)(1/1000)

Products - Reactants

Question 2

First order formulas

Answer 2

t 1/2 = 0.693/k

Ln (Final / Initial) = -kt

Question 3

Second order formulas

Answer 3

t 1/2 = 1 / (initial)(k)

1/final - 1/initial = kt

Question 4

Zero order formulas

Answer 4

t 1/2 = inital / 2k

Initial - Final = kt

Question 5

Delta H is

Answer 5

Enthalpy

Question 6

Delta S is

Answer 6

Entropy

Question 7

Delta G is

Answer 7

Reaction occuring or not

Question 8

Delta H for:

Exo
Endo

Answer 8

(-)

+

Question 9

Delta G for:

Spontaneous
Non Spontaneous

Answer 9

(-)

+

Question 10

Delta S for:

More DISORDER
Less DISORDER

Answer 10

(+)

-

Question 11

4 factors that effect rate

Answer 11

Concentration
Temp
Catalyst
Physical state - 
(PV)

Question 12

Concentration goes up ….

Answer 12

Rate goes up

Question 13

Temp goes up ….

Answer 13

Rate goes up

Question 14

Catalyst ….

Answer 14

Rate goes up

Question 15

Pressure goes up ….

Answer 15

Rate goes up

Question 16

Volume goes up ….

Answer 16

Rate goes down

Question 17

Mol ratio of oxalic acid with NaOH

Answer 17

1 (Oxalic) : 2 (NaOH)

Question 18

Rate of disappearance

Answer 18

R = - (1/coeff) [A]^order

Question 19

Rate of appearance

Answer 19

R = + (1/coeff) [A]^order

Question 20

Slope equation

Answer 20

• Ea/R

Question 21

Activational energy formula

Answer 21

K2/K1 = -Ea/R (T2 - T1)(1/1000)

Question 22

Units of K in OVERALL FIRST ORDER

Answer 22

1/s

Question 23

Units of K in OVERALL SECOND ORDER

Answer 23

1/M . S

Question 24

Units of K in OVERALL THIRD ORDER

Answer 24

1/M^2 . S

Question 25

When concentration doubles and rate doubles it is a

Answer 25

FIRST ORDER REACTION

Question 26

When concentration doubles and rate quads it is a

Answer 26

SECOND ORDER REACTION

Question 27

When concentration doubles and rate stays the same it is a

Answer 27

ZERO ORDER REACTION

Question 28

Arrhenius equation originally

Arrhenius equation manipulated for Ln K

Answer 28

K = Ae^ -Ea/RT

Ln K = - (Ea/R)(1/T) + Ln A

Question 29

What is the mol ratio between CaCO3 and HCL

Answer 29

1 (CaCO3) : 2 HCL

Question 30

What is the % that quantative transfer does

Answer 30

99.9999%

Question 31

What is the number of sig figs in:

Buret
Graduated cylinder
Pipet
Beaker

Answer 31

4

3

4

2

Question 32

What goes on the graph x and y axis for:

Zero

First

Second

Answer 32

Zero:
x = t
y = inital [A]

First:
x = t
y = ln [A]

Second
x = t
y = 1/[A]

Question 33

What causes delta S to increases (More disorder)

Answer 33

(s) to (l) to (g)
Increase T 
Increase V 
Increase MW 
Increase Mol

Question 34

If the beaker gets hot it is

Answer 34

Exothermic

Question 35

If the beaker gets cold it is

Answer 35

Endothermic

Question 36

If you over titrate, your value will be

Answer 36

Smaller

Question 37

The Al in exp 19 converts what

Answer 37

Fe+3 to Fe +2

Question 38

What is the reducing agent and what is the oxidising agent in exp 19

Answer 38

Ce+4 = oxidising

Fe+2 = reducing

Question 39

What is the redox reaction in exp 19

Answer 39

Ce+4 + Fe+2 ——- Ce+3 + Fe+3

Question 40

Thymol is an indicator used for

What does its colour change to

Answer 40

CaCO3 = tums

Red to yellow

Question 41

What indicator is used in exp 19

What does its colour change to

Answer 41

Oxidation reduction indicator

Red to colourless/light blue