The reactions that take place at the cathode and the anode when molten NiBr 2 , AlF 3 and MnI 2 are electrolyzed. Concept introduction: The non-spontaneous reaction takes place in an electrolytic cell in which there occurs conversion of electrical energy into chemical energy and this is used for the electrolysis of a metal. The electrolytic cell involves a cathode and an anode, both dipped into an electrolytic solution having both the positive and negative ions. To determine: The reactions that take place at the cathode and the anode when molten NiBr 2 is electrolyzed. The reaction taking place at cathode is, Ni 2 + + 2 e − → Ni The reaction taking place at anode is, 2 Br − → Br 2 + 2 e −
The reactions that take place at the cathode and the anode when molten NiBr 2 , AlF 3 and MnI 2 are electrolyzed. Concept introduction: The non-spontaneous reaction takes place in an electrolytic cell in which there occurs conversion of electrical energy into chemical energy and this is used for the electrolysis of a metal. The electrolytic cell involves a cathode and an anode, both dipped into an electrolytic solution having both the positive and negative ions. To determine: The reactions that take place at the cathode and the anode when molten NiBr 2 is electrolyzed. The reaction taking place at cathode is, Ni 2 + + 2 e − → Ni The reaction taking place at anode is, 2 Br − → Br 2 + 2 e −
Solution Summary: The author describes the electrolysis of molten NiBr_2 in an electrolytic cell.
Definition Definition Process of breaking down ionic compounds into their constituent elements by passing a direct electric current through the compound in a fluid state.
Chapter 18, Problem 109E
(a)
Interpretation Introduction
Interpretation:
The reactions that take place at the cathode and the anode when molten
NiBr2,
AlF3 and
MnI2 are electrolyzed.
Concept introduction:
The non-spontaneous reaction takes place in an electrolytic cell in which there occurs conversion of electrical energy into chemical energy and this is used for the electrolysis of a metal. The electrolytic cell involves a cathode and an anode, both dipped into an electrolytic solution having both the positive and negative ions.
To determine: The reactions that take place at the cathode and the anode when molten
NiBr2 is electrolyzed.
The reaction taking place at cathode is,
Ni2++2e−→Ni
The reaction taking place at anode is,
2Br−→Br2+2e−
(b)
Interpretation Introduction
Interpretation:
The reactions that take place at the cathode and the anode when molten
NiBr2,
AlF3 and
MnI2 are electrolyzed.
Concept introduction:
The non-spontaneous reaction takes place in an electrolytic cell in which there occurs conversion of electrical energy into chemical energy and this is used for the electrolysis of a metal. The electrolytic cell involves a cathode and an anode, both dipped into an electrolytic solution having both the positive and negative ions.
To determine: The reactions that take place at the cathode and the anode when molten
AlF3 is electrolyzed.
The reaction taking place at cathode is,
Al3++3e−→Al
The reaction taking place at anode is,
2F−→F2+2e−
(c)
Interpretation Introduction
Interpretation:
The reactions that take place at the cathode and the anode when molten
NiBr2,
AlF3 and
MnI2 are electrolyzed.
Concept introduction:
The non-spontaneous reaction takes place in an electrolytic cell in which there occurs conversion of electrical energy into chemical energy and this is used for the electrolysis of a metal. The electrolytic cell involves a cathode and an anode, both dipped into an electrolytic solution having both the positive and negative ions.
To determine: The reactions that take place at the cathode and the anode when molten
NiBr2 is electrolyzed.
LTS
Solid:
AT=Te-Ti
Trial 1
Trial 2
Trial 3
Average
ΔΗ
Mass water, g
24.096
23.976
23.975
Moles of solid, mol
0.01763
001767
0101781
Temp. change, °C
2.9°C
11700
2.0°C
Heat of reaction, J
-292.37J -170.473
-193.26J
AH, kJ/mole
16.58K 9.647 kJ 10.85 kr
16.58K59.64701
KJ
mol
12.35k
Minimum AS,
J/mol K
41.582
mol-k
Remember: q = mCsAT (m = mass of water, Cs=4.184J/g°C) & qsin =-qrxn &
Show your calculations for:
AH in J and then in kJ/mole for Trial 1:
qa (24.0969)(4.1845/g) (-2.9°C)=-292.37J
qsin =
qrxn =
292.35 292.37J
AH in J = 292.375 0.2923kJ
0.01763m01
=1.65×107
AH in kJ/mol =
=
16.58K
0.01763mol
mol
qrx
Minimum AS in J/mol K (Hint: use the average initial temperature of the three trials, con
Kelvin.)
AS=AHIT
(1.65×10(9.64×103) + (1.0
Jimai
For the compound: C8H17NO2
Use the following information to come up with a plausible structure:
8
This compound has "carboxylic acid amide" and ether functional groups.
The peaks at 1.2ppm are two signals that are overlapping one another.
One of the two signals is a doublet that represents 6 hydrogens; the
other signal is a quartet that represents 3 hydrogens.
Vnk the elements or compounds in the table below in decreasing order of their boiling points. That is, choose 1 next to the substance with the highest bolling
point, choose 2 next to the substance with the next highest boiling point, and so on.
substance
C
D
chemical symbol,
chemical formula
or Lewis structure.
CH,-N-CH,
CH,
H
H 10: H
C-C-H
H H H
Cale
H 10:
H-C-C-N-CH,
Bri
CH,
boiling point
(C)
Сен
(C) B
(Choose
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