14434549 electroplating learning material of chemistry by hariyanto
DESCRIPTION
electroplatingTRANSCRIPT
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ELECTROPLATING OF METALSELECTROPLATING OF METALS
ELECTROPLATING OF IRONELECTROPLATING OF IRON
ELECTROPLATING OF COPPERELECTROPLATING OF COPPER
EXERCISEEXERCISE
CONCLUSION
CURRICULUM
ACCU
( - ) ( + )
ANODE CATHODE
Electrolyte solution
QUITQUIT
BY HARIYANTO SMA NEGERI 3 MALANG
BY HARIYANTOBY HARIYANTO
INTRODUCTION
ELECTROPLATINGELECTROPLATING
LESSON PLANLESSON PLAN
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STANDARD OF COMPETENCY :To understand oxidation and reduction reaction and
electrochemistry cell and also its application in technology and daily life
Basic competency :To observe redox reaction in electrolysis cell and apply faraday’s law
MENU
Indicator :
To write electrolysis reaction in electroplating of metalsPurposes :The audiences are able to :
understand the process of electroplating
describe how to plate metal by other metal
arrange materials and substances of electroplating
BY HARIYANTO SMA NEGERI 3 MALANG
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Electrochemistry is the branch of chemistry that studies about change of electrical energy to chemical energy or change of chemical energy to electrical energy
MENU
Electrochemistry :
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MENU
Electrochemistry cell :
Electrochemistry cell is cell that change the electrical energy to chemical energy or change the chemical energy to electrical energyExamples:
ACCUMULATORACCUMULATOR BATTERYBATTERY ELECTROPLATING CELLELECTROPLATING CELL
BY HARIYANTO SMA NEGERI 3 MALANG
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MENU
ELECTROCHEMISTRYELECTROCHEMISTRY CELLCELL
VOLTA CELL ELECTROLYSIS CELL
Canges the chemical energy to electrical energy
Ex : accu, battery
Canges the electrical energy to chemical energy
Ex : electroplating cell
BY HARIYANTO SMA NEGERI 3 MALANG
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REDOX REACTIONREDOX REACTION
OXIDATION REDUCTION
Atom/substance releases electron
Ex : Au (atom) Au3+(ion) + 3e
Atom/subtance gains electron
Ex : Au3+(ion) + 3e Au (atom)
BY HARIYANTO SMA NEGERI 3 MALANG
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MENU
Definition of electroplatingElectroplating is process to plate metal by other metal with electrolysis
Purpose of electroplating
The purposes of electroplating are protecting metal of corrosion and making performance of metal better
Examples:
We plate iron by chromium to make the iron resists corosion
We plate copper ring by gold to make the ring looks better
BY HARIYANTO SMA NEGERI 3 MALANG
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Arrangement of electroplating equipment
ACCU
( - ) ( + )
ANODE
Electrolyte solution
CATHODE
switch
Source of electricity
SOURCE OF ELECTRICITY
CABLE
ANODE
CATHODE
SWITCH
ELECTROLYTE SOLUTION
BY HARIYANTO SMA NEGERI 3 MALANG
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GOLD COPPER
CLICK ON
ANODE CATHODE
( + )( - )
OFF
Solution of AuCl3
ACCU
ELECTROPLATING OF COPPERELECTROPLATING OF COPPER
ON
BY HARIYANTO SMA NEGERI 3 MALANG
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GOLD COPPER
Click circleClick circle
ANODE CATHODE
( + )
ACCU
OFF
Cl-
Cl-
Au3+
Au3+
Cl-
Cl-
Cl- Cl-
( - ) CLICK OFF
ELECTROPLATING OF COPPERELECTROPLATING OF COPPER
ON
BY HARIYANTO SMA NEGERI 3 MALANG
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GOLD COPPER
CLICK ON
ANODE CATHODE
( + )( - )
OFF
Solution of AuCl3
ACCU
ELECTROPLATING OF COPPERELECTROPLATING OF COPPER
ON
BY HARIYANTO SMA NEGERI 3 MALANG
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ANODE OF GOLD
ion of Au 3+
Electron
Notes :
Atom of Au
Ion of Cl -
Back
Gold ( Anoda ) : Au(s) Au3+(Aq) + 3e ( oxidation )
REACTION:
ANODANODEE( ( OXIDATION REACTIONOXIDATION REACTION ) )
BY HARIYANTO SMA NEGERI 3 MALANG
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CATHODE OF COPPER
Ion of Au 3+
Electron
Notes
Atom of Au
Ion of Cl -
Back
Copper ( Cathoda ) : Au(s) ( Reduction )Au3+(Aq) + 3e
REACTION :
CCATATHHODODEE (REDU (REDUCTION REACTIONCTION REACTION ) )
MENU
BY HARIYANTO SMA NEGERI 3 MALANG
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CLICK ON( + )( - )
OFF
ACCU
Anode Perak
Katode
Besi
ON
BY HARIYANTO SMA NEGERI 3 MALANG
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