Write the half reaction including a zero oxidation state if need and macroscopic observations for copper and zinc. Example of half reactions and macroscopic observations are attached.
Write the half reaction including a zero oxidation state if need and macroscopic observations for copper and zinc. Example of half reactions and macroscopic observations are attached.
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Science behind corrosion-test
Corrosion is defined as an activity that transforms refined metals into more chemically stable forms such as oxide, hydroxide, carbonate, or sulfide. It refers to the slow decomposition of things (typically metals); thanks to chemical and/or electrochemical reactions with their surroundings. Corrosion engineering is the science of preventing and controlling corrosion.
Corrosion
Corrosion is defined as an activity that transforms refined metals into more chemically stable forms such as oxide, hydroxide, carbonate, or sulfide. It refers to the slow decomposition of things (typically metals); thanks to chemical and/or electrochemical reactions with their surroundings. Corrosion engineering is the science of preventing and controlling corrosion.
Question
Write the half reaction including a zero oxidation state if need and macroscopic observations for copper and zinc.
Example of half reactions and macroscopic observations are attached.
Transcribed Image Text:Types
LEFT
silver
(Ag)
silver
silver
magnesium
(Mg)
magnesium
magnesium
RIGHT
copper
(Cu)
zinc
(Zn)
magnesium
(Mg)
copper
(Cu)
zinc
(Zn)
silver
(Ag)
VOLTAGE
+0.43
+1.53
+3.15
-2.72
-1.62
-3.15
Reactions!
MACROSCOPIC
OBSERVATIONS
Purple right-side solution and
metal warn; left side metal
has deposits.
Right metal warns away;
left side has deposits.
Right side metals warns
away; left side has
deposits.
Left side warns away;
right side has deposits.
Left side metal warns
away: right-side has
deposits.
Left side warns away:
right-side has deposits.
Analysis
MICROSCOPIC
OBSERVATIONS
Left side electrons flow downward, attracting
additional Ag atoms to join the surface, while right
side electrons travel upward, ionizing and
dispersing the metal atoms into the solution.
zinc releases two electrons and passes into the solution as Zn+2,
making the electrode negatively charged. Ag+ extracted one
electron and deposited it in the electrode, making it positively
charged.
Mg releases two electrons and passes into the
solution as Mg2+, making the electrode
negatively charged. Ag+ lons extract one
electron from the electrode and deposited on the
electrode, making it positively charged.
The left-side electrons travel upwards ionizing
and dispering the Mg atoms. Right-side electrons
flow downwards attracting additional Cu atoms.
The left-side electrons travel upwards lonizing and dispering
the Mg atoms into the solution while the right-side electrons
flow downward attracting additional In atoms to join the
surface.
Mg ionizes and drifts into the solution, electrons
travel upward, right-side electrons travel
downward, attracting new Ag atoms.
M
LEFT SIDE
INFERENCES
See Mp
cathode, reduction,
Ag+1+le-
--> Ago
Reduction
Cathode
Ag+1+le---> Ago
oxidation, cathode,
Ag+1+le- ==> Ago
Oxidation
anode
Mg0Mg 2+20-
oxidation, anode,
Mg0 --> Mg+2
+26-
Oxidation anode
Mg0 --> Mg+2+2e-
RIGHT SIDE
INFERENCES
anode, oxidation,
CuO -->
Cu+2+2e-
Oxidation
anode
Zno--> Zn+2+20-
Reduction, anode,
Mg 0--> Mg2+ +2e-
Reduction
cathode
Cu+2+20--->Cuo
reduction,
cathode, Zn+2
+2e---> Zno
Reduction
cathode
Ag+1+1o--- Ago
Transcribed Image Text:- 500 mL
450
- 100
25
See Molecular Scale
- 500 mL
Left Beaker
<-450
- 100
See Molecular Scale
Experiment Set Full Reset
Copper (Cu) in Cu(NO3)2 (aq)
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