Page 31 - APS(2022)_TG5 _Edisi Guru

Infografik Sains

BAB Elektrokimia
6 6 Electrochemistry

Elektrolisis Plumbum(II) bromida
Electrolysis of Lead(II) bromide

Suis Mentol
Switch Bulb
Di anod: Di katod:
At anode: At cathode:
Gas perang (gas Rod karbon Rod karbon Pepejal kelabu berkilat
bromin terbebas) Carbon rod Carbon rod (plumbum terenap)
Brown gas (bromine gas Mangkuk pijar Deposits of silvery
released) Crucible Leburan plumbum(II) globules (lead precipitates)
bromida
Molten lead(II) bromide
Panaskan
Heated

Elektrolisis Sebatian Lebur / Electrolysis of Molten Compound

+ –
e – e –
e – Plumbum(II) bergerak ke katod e – Plumbum(II) Faktor yang mempengaruhi pemilihan ion
e – Lead(II) ion moves to the cathode e – menerima untuk dinyahcas di elektrod:
dua elektron Factors that affect the selective discharge of
+ – daripada katod ions at electrodes:
Gas bromin terhasil Br Br – 2+ e –
Bromine gas is produced e Pb e – Pb 2+ Lead(II) ion • Kedudukan ion dalam siri elektrokimia
accepts two
Atom bromin terbentuk Br – e – – Atom electrons from Position on ions in electrochemical series
e
Bromine atom is formed e – Br – e – Pb plumbum cathode • Kepekatan ion
terenap
Ion bromida menderma Br – Br Lead atom Leburan Concentration of ion
elektron ke anod Anod Catod deposited plumbum(II) • Jenis elektrod
Bromide ion donates an Anode Cathode bromida Types of electrodes
electron to the anode Molten lead(II)
Ion bromida bergerak ke anod
Bromide ions move to the anode bromide

Kegunaan Elektrolisis dalam Industri / Uses of Electrolysis in Industry

Pengekstrakan logam Penulenan logam Penyaduran logam
Metal extraction Metal purification Metal electroplating
• Logam yang lebih reaktif daripada • Logam tak tulen dijadikan anod • Logam digunakan untuk menyadur
karbon diekstrak daripada bijihnya. manakala logam tulen dijadikan katod. dijadikan anod manakala objek yang
Metals that are more reactive than carbon Impure metal is used as the anode whereas hendak disadur dijadikan katod.
are extracted from their ore. pure metal is used as cathode. The metal is used as the anode whereas the
• Contoh / Example: • Contoh / Example: object is used as cathode.
• Contoh / Example: Suis
Switch
Katod grafit Anod Ammeter A Reostat
Graphite grafit Ammeter Rheostat
cathode Graphite Anod (kuprum Katod
anode tak tulen) (kuprum tulen)
Anode Cathode Sudu besi (katod)
Leburan aluminium oksida Leburan (impure copper) (pure copper) Kuprum Iron spoon (cathode)
(anod)
terlarut dalam kriolit aluminium Copper Larutan
Molten aluminium Molten Larutan kuprum(II) sulfat (anode) kuprum(II) sulfat
oxide dissolved in cryolite aluminium Copper(II) sulphate solution Copper(II)
sulphate solution

G6 GPB

Infographic Amali Proses Sains TG5.indd 6 7/28/21 2:26 PM