elektrolisis

Quiz
•
Chemistry
•
7th Grade
•
Hard
Wan Nawawi
Used 18+ times
FREE Resource
34 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Berikut ini komponen utama sel elektrolisis, kecuali
larutan elektrolit
anode
sumber arus searah
jembatan garam
katode
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Pada elektrolisis larutan NaCl dengan elektrode Al, maka pernyataan yang benar adalah...
dihasilkan gas oksigen di katode
dihasilkan gas hidrogen di anode
dihasilkan gas klorin di anode
diendapkan logam Na di katode
terjadi pengurangan logam alumunium di anode
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Untuk melapisi cincin yang terbuat dari Zink dengan pelapis perak, maka dilakukan dengan elektrolisis. Pernyataan yang tidak benar adalah ...
menggunakan sumber arus searah
anoda berupa logam inert
anode menggunakan logam Ag
elektrolitnya adalah larutan
cincin zink sebagai anode
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Untuk memurnikan logam Cu yang tidak murni karena ada pengotor emas, maka dilakukan dengan elektrolisis. Elektrolisis menggunakan logam Cu Murni di katode dan Cu tidak murni sebagai anode serta larutan . Massa Cu tidak murni adalah 10 gram. Jika untuk memurnikan seluruh logam Cu tidak murni dibutuhkan arus sebesar 5 A selama 5790 detik. Kadar Cu dalam dalam Cu tidak murni adalah ....Ar Cu = 63,5
63,5%
75%
85%
95%
95,25%
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Diagram above shows the electrolysis of lead(II) chloride.Which of the following statements are true about the process?
Rajah diatas menunjukkan elektrolisis plumbum(II) klorida.Antara pernyataan yang berikut, manakah benar tentang proses tersebut?
I Electrode P is the cathode.
Elektrod P ialah katod.
II Anions are attracted to electrode P.
Anion-anion tertarik ke elektrod P.
III Cations are discharge at electrode Q.
Kation-kation dinyahcas pada elektrod Q.
I and II only/I dan II sahaja
I and III only/I dan III sahaja
II and III only/II dan III sahaja
I, II and III/I,II dan III
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What are the products will form at electrode P and Q respectively?
Apakah hasil tindak balas yang akan terbentuk masing-masing pada elektrod P dan Q?
P:Lead oxide/Plumbum oksida
Q:Chlorine gas/Gas klorin
P:Lead metal/Logam plumbum
Q:Hydrogen gas/Gas hidrogen
P:Hydrogen gas /Gas hidrogen
Q:Lead oxide/Plumbum oksida
P:Chlorine/Gas klorin
Q:Lead metal/Logam plumbum
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Diagram above shows the electroplating of an iron spoon.Which of the following is suitable to be used as the electrolyte?
Rajah diatas menunjukkan penyaduran sudu besi.Antara yang berikut, manakah sesuai digunakan sebagai elektrolit?
Iron (II) sulphate
Ferum (II) sulfat
Copper (II) sulphate
Kuprum (II) sulfat
Chromium nitrate
Kromium nitrat
Sodium hydroxide
Natrium hidroksida
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