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Electrochemistry
Labcourse SS19
Institut für Chemische Technologie Anorganischer Stoffe
Univ. Prof. Dr. Achim Walter Hassel achimwalter.hassel@jku.at
Assist.-Prof. Dr. Cezarina Mardare cezarina.mardare@jku.at
Assoc.-Prof. Dr. Andrei Mardare andrei.mardare@jku.at
Dipl.-Chem. Dr. Jan Kollender jan.kollender@jku.at
Institut für Chemische Technologie Anorganischer Stoffe
M.Sc. Shaukat Ali Lone
M.Sc. Dominik Recktenwald
Student help – Florian Reiter
Karl Zelenka
General rules
Timetable
Period – 4 days – room T145
Monday – Thursday, 13:00 – 17:00 compulsory presence
at least once per semester, every semester
Check Paper Deadline!
Short questions before experiments
— twice failing results in lab failure
— only for one experiment one re-examination is allowed
Index Lab1 Lab2 Lab3 Lab4 Lab5LVA No. 317.004 317.005 317.006 317.011 317.012Dates 11-14.03 18-21.03 13-16.05 20-23.05 03-06.06Paper
Deadline01.04 08.04 03.06 12.06 24.06
each lab course can accommodate maximum 10 students (selected by KUSSS)
keys for the lockers (storing personal items) may be “rented” for 20 € (reimbursable)
there are 5 groups of 2 students chosen consecutively in the KUSSS selection order:
Gr.I = student with status 1 + student with status 2
Gr.II = student with status 3 + student with status 4
Gr.III = student with status 5 + student with status 6
Gr.IV = student with status 7 + student with status 8
Gr.V = student with status 9 + student with status 10
Monday Tuesday Wednesday ThursdayTime 13‐15 15‐17 13‐15 15‐17 13‐15 15‐17 13‐17
Exp. No
1 Gr.I Gr.II Gr.III GrI.V Gr.V Clean2 Gr.II Gr.III Gr.IV Buffer Gr.V Gr.I Re‐Examination3 Gr.III Gr.IV Gr.V time Gr.I Gr.II Recycle4 Gr.IV Gr.V Gr.I Gr.II Gr.III Reserve5 Gr.V Gr.I Gr.II Gr.III Gr.IV Feedback
pay attention to the inventory list and inform if something is missing
cleaning is performed in a logical order:
Gr.I cleans Exp. No. 1
Gr.II cleans Exp. No. 2
etc.
Experimental work
1) Reference electrodes
— C.C. Mardare
2) The electrochemical series: Concentration chain
— D. Recktenwald
3) Charge transport in electrolyte solutions: Electrolyte conductivity
— A.I. Mardare
4) Potentiometric pH measurements: Glass electrode
— J.P. Kollender
5) Redox titration: Cerimetry
— S.A. Lone
exchanging places between Lab1-5 is possible only for student pairs (self-organized)
by personally coming together to our secretariat – deadline is 06.03.2019 at 12:00
when exchanging places, present to secretariat a sheet of paper containing the student
information and lab courses like this:
LVA 317.004 LVA 317.011
A.I. Mardare A.W. Hassel
K010101010 K020202020
move to
Access to other Labs is strictly forbidden (Lab tour available by request)
You must use the Safety Presence List - Always check the Info board!
missing only one lab day with good reason (e.g. health) is possible (except illogical
scenarios)
missing more than one day results in course break-off
Clean your workspace on a daily basis, don’t invade neighboring spaces
Removing items from the lab is strictly forbidden
Only use the recipients and hardware designed for your experiment
everything must be stored under the table at the designated workplace
In case of misbehaving, you may be asked to leave the lab – pay attention to instructions
If you don’t know how to use a device, you must ask!
Glassware must always be labeled with: Student name, Date, Chemical name
Dispose of your chemicals at the end of the Praktikum at latest
Always clean the balance after use (brush)
Scientific report
All protocols will be submitted electronically in
.doc and .pdf format BEFORE the deadline
The electron is a subatomic particle carrying a negative electric charge. It has no known components or substructure. Therefore, the electron is generally believed to be an elementary particle.[2] An electron has a mass that is approximately 1/1836 that of the proton.[9] The intrinsic angular momentum (spin) of the electron is a half-integer value in units of ħ, which means that it is a fermion. The antiparticle of the electron is called the positron. The positron is identical to the electron except that it carries electrical and other charges of the opposite sign. When an electron collides with a positron, both particles may either scatter off each other or be totally annihilated, producing a pair (or more) of gamma ray photons. Electrons, which belong to the first generation of the lepton particle family,[10] participate in gravitational, electromagnetic and weak interactions.[11] Electrons, like all matter, have quantum mechanical properties of both particles and waves, so they can collide with other particles and be diffracted like light. However, this duality is best demonstrated in experiments with electrons, due to their tiny mass. Since an electron is a fermion, no two electrons can occupy the same quantum state, in accordance with the Pauli exclusion principle.[10]
A part from my Introduction (written by myself, of course):
Please, be aware: We are always collecting all the old Protocols
We can use the Internet as easy as you do
We will get the same search results on Google as you do
Have you ever heard about anti-Plagiarism software? We have!
Plagiarism will not be tolerated!
Abschreiben wird nicht toleriert!
Personal evaluation
19
Grades: min 0%, max 100%
Protocol/Paper
Scientific content
Personal interviews during entire Lab course
- be prepared before starting an experiment
- misbehaving during an experiment may lead to failure
- 2 times oral examination failure = total failure
Various theoretical aspects
50 %
50 %
Weight for the final grade
Percentage Grade
<= 50 5
50.01 – 62.5 4
62.51 – 75 3
75.01 – 87.5 2
87.51 – 100 1
Plagiarism – Plagiate = 0%A minimum of 50.01% is required at every activity!
Safety regulations
Read carefully the “Laborordnung” (German
only), print it, sign the document and present
it in the first lab day for access in the lab!
Always use protective glasses
Wear your lab coat for protecting your clothes
Avoid using sandals or shoes which exposes the leg
Try to have your body covered as much as possible
If you have long hair, have it always bound together
Eating or drinking is not allowed inside the institute
Everybody agrees to the Presence disclosure?
Lab Group VORNAME NACHNAME STATUS Date
1
IThomas Schiefer 0
11‐14.03
Gülsen Büyükdemirci 0
IISarah Dornetshuber 0Maria Wolfsgruber 0
IIIMagdalena Fidler 0Daniel Danner 0
IVLisa Christina Öttl 0Laura Androsch 0
VDavid Haslinger 0Laura Holzinger W1
Lab Group VORNAME NACHNAME STATUS Date
2
IMerima Osmanovic W2
18‐21.03
Christian Heizinger W3
IIKamilla Himpli W4Katharina Reisz W5
IIIEvelyn Kwarko W6Anna Christina Pfeifer W7
IVSaskia Dollberger W8Elisabeth Leeb W9
VStefan Pöllner W10David Josef Naderer W11
Lab Group VORNAME NACHNAME STATUS Date
3
IVanessa Ikic W12
13‐16.05
Edith Blaimschein W13
IIHannah Rabl W14Peter Prka W15
IIIPhilipp Woisetschläger W16Andreas Greul W17
IVPaul Stehrer W18Laura Lienbacher W19
VAdrian Tizian Theil W20Magdalena Piringer W21
Lab Group VORNAME NACHNAME STATUS Date
4
IMaximilian Hochrainer W22
20‐23.05
Tanja Hengstschläger W23
IIAlina Spindler W24Seval Büyükkal W25
IIIGeorg Dobringer W26Dominik Weber W27
IVHannes Mitter W28Theresa Jungwirth W29
VNadine Kleinbruckner W30Samuel Redl W31
Lab Group VORNAME NACHNAME STATUS Date
5
ISarah Schwarz W32
03‐06.06
Florian Smrzka W33
IIJohn Samo W34Christoph Standfest W35
IIIAndreas Miesenberger W36Berfin Demirdögen W37
IV Julian PrömerHannes Schausberger
VClemens HabermaierSarah Haneschläger
Thank you!
A few suggestions on how to prepare decent graphs and figures
Colors
-3.76566E-10
1.23434E-10
6.23434E-10
1.12343E-09
1.62343E-09
2.12343E-09
2.62343E-09
3.12343E-09
3.62343E-09
4.12343E-09
4.62343E-09
5.12343E-09
5.62343E-09
6.12343E-09
6.62343E-09
7.12343E-09
7.62343E-09
8.12343E-09
8.62343E-09
9.12343E-09
100 450 800
l [µm]
I [A
]
pH 1 pH 2 pH 3 pH 5 pH 4
Background
-3.76566E-10
1.23434E-10
6.23434E-10
1.12343E-09
1.62343E-09
2.12343E-09
2.62343E-09
3.12343E-09
3.62343E-09
4.12343E-09
4.62343E-09
5.12343E-09
5.62343E-09
6.12343E-09
6.62343E-09
7.12343E-09
7.62343E-09
8.12343E-09
8.62343E-09
9.12343E-09
100 450 800
l [µm]
I [A
]
pH 1 pH 2 pH 3 pH 5 pH 4
Thickness of Lines and Dots
-3.76566E-10
1.23434E-10
6.23434E-10
1.12343E-09
1.62343E-09
2.12343E-09
2.62343E-09
3.12343E-09
3.62343E-09
4.12343E-09
4.62343E-09
5.12343E-09
5.62343E-09
6.12343E-09
6.62343E-09
7.12343E-09
7.62343E-09
8.12343E-09
8.62343E-09
9.12343E-09
100 450 800
l [µm]
I [A
]
pH 1 pH 2 pH 3 pH 5 pH 4
Number of Ticks
-3.76566E-10
1.23434E-10
6.23434E-10
1.12343E-09
1.62343E-09
2.12343E-09
2.62343E-09
3.12343E-09
3.62343E-09
4.12343E-09
4.62343E-09
5.12343E-09
5.62343E-09
6.12343E-09
6.62343E-09
7.12343E-09
7.62343E-09
8.12343E-09
8.62343E-09
9.12343E-09
100 450 800
l [µm]
I [A
]
pH 1 pH 2 pH 3 pH 5 pH 4
Scales
-3.76566E-10
1.23434E-10
6.23434E-10
1.12343E-09
1.62343E-09
2.12343E-09
2.62343E-09
3.12343E-09
3.62343E-09
4.12343E-09
4.62343E-09
5.12343E-09
5.62343E-09
6.12343E-09
6.62343E-09
7.12343E-09
7.62343E-09
8.12343E-09
8.62343E-09
9.12343E-09
100 450 800
l [µm]
I [A
]
pH 1 pH 2 pH 3 pH 5 pH 4
Numbers
-8.76566E-10
1.23434E-10
1.12343E-09
2.12343E-09
3.12343E-09
4.12343E-09
5.12343E-09
6.12343E-09
7.12343E-09
8.12343E-09
9.12343E-09
100 200 300 400 500 600 700 800
l [µm]
I [A
]
pH 1 pH 2 pH 3 pH 5 pH 4
Numbers (…continued)
0.00000E+00
1.00000E-09
2.00000E-09
3.00000E-09
4.00000E-09
5.00000E-09
6.00000E-09
7.00000E-09
8.00000E-09
9.00000E-09
100 200 300 400 500 600 700 800
l [µm]
I [A
]
pH 1 pH 2 pH 3 pH 5 pH 4
Numbers…
0.0E+00
1.0E-09
2.0E-09
3.0E-09
4.0E-09
5.0E-09
6.0E-09
7.0E-09
8.0E-09
9.0E-09
100 200 300 400 500 600 700 800
l [µm]
I [A
]
pH 1 pH 2 pH 3 pH 5 pH 4
… more about numbers…
0
0.000000001
0.000000002
0.000000003
0.000000004
0.000000005
0.000000006
0.000000007
0.000000008
0.000000009
100 200 300 400 500 600 700 800
l [µm]
I [A
]
pH 1 pH 2 pH 3 pH 5 pH 4
Font size
0
1
2
3
4
5
6
7
8
9
100 200 300 400 500 600 700 800
l [µm]
I [nA
]
pH 1 pH 2 pH 3 pH 5 pH 4
Font size and Labels
0
1
2
3
4
5
6
7
8
9
100 200 300 400 500 600 700 800l [µm]
I [nA
]
pH 1 pH 2 pH 3 pH 5 pH 4
Labels
0
1
2
3
4
5
6
7
8
9
100 200 300 400 500 600 700 800
l [µm]
I [nA
]
pH 1 pH 2 pH 3 pH 5 pH 4
Legend
0
1
2
3
4
5
6
7
8
9
100 200 300 400 500 600 700 800l / µm
I / n
A
pH 1 pH 2 pH 3 pH 5 pH 4
0
1
2
3
4
5
6
7
8
9
100 200 300 400 500 600 700 800l / µm
I / n
ApH 1
pH 2
pH 3
pH 5
pH 4
nice!
0
1
2
3
4
5
6
7
8
9
100 200 300 400 500 600 700 800
l / µm
I / n
A
pH 1
pH 2
pH 5
pH 4
pH 3
…more about numbers and scales
-1.5
-1
-0.5
0
0.5
1
1.5
0.00 1.57 3.14 4.71 6.28 7.85 9.42 11.00 12.57 14.14 15.71
/ °
U /
I
-1.5
-1
-0.5
0
0.5
1
1.5
0 1/2 1 1 1/2 2 2 1/2 3 3 1/2 4 4 1/2 5
/ °
U /
V
0 21 2
3 252 3 2
7 4 27 5
…better
??
0
1000000
2000000
3000000
4000000
5000000
6000000
7000000
0 20 40 60
t / s
i / A
cm-2
i = t2
i = log t
i = 2t
i = t4
0100020003000400050006000700080009000
10000
0 10 20 30 40 50
t / s
i / A
cm-2
and more on scales…
i = t4
i = t2
i = log t
i = 2t
logarithmic scale
1.0E-01
1.0E+00
1.0E+01
1.0E+02
1.0E+03
1.0E+04
1.0E+05
1.0E+06
1.0E+07
0 20 40 60
t / s
i / A
cm-2
i = t4
i = t2
i = log t
i = 2t
1.0E-01
1.0E+00
1.0E+01
1.0E+02
1.0E+03
1.0E+04
1.0E+05
1.0E+06
1.0E+07
1 10 100
t / s
i / A
cm-2
i = t4
i = t2
i = log t
i = 2t
double logarithmic plot
-1
0
1
2
3
4
5
6
7
8
0 0.5 1 1.5 2
log (t / s)
log
(i /
Acm
-2) i = t4
i = t2
i = log t
i = 2t
double logarithmic plot
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