KIMIA KELAS XII MIPA SMT GANJIL 2020
Quiz
•
Chemistry
•
12th Grade
•
Practice Problem
•
Hard
JUNIARTI DODI S
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25 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Berikut ini yang merupakan aplikasi dari penurunan tekanan uap adalah....
proses cuci darah
penambahan vitamin E pada minyak kelapa
penambahan etilen glikol pada radiator mobil
orang dapat mengapung di laut mati
menambahkan garam pada rebusan daging agar lebih cepat empuk
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Perhatikan persamaan reaksi redoks berikut:
2HBr + H2SO4 --> Br2 + SO2 + 2H2O
Zat yang merupakan reduktor adalah….
HBr
H2SO4
Br2
SO2
H2O
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Setengah reaksi reduksi NO3– menjadi N2O adalah sebagai berikut.
a NO3–(aq) + b H+ + 8 e– ⎯⎯→ c N2O(g) + d H2O(l)
Nilai a dan b yang cocok adalah ….
2, 5
2, 10
, 1, 4
1, 5
3, 5
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Suatu sel volta menggunakan logam
seng dan cadmium dengan data potensial reduksi sebagai berikut :
Zn2+(aq)+ 2 e → Zn (s) E0= -0,76 V
Cd2+(aq)+ 2 e → Cd(s) E0 = -0,40 V
Harga E0sel dari sel volta adalah..
– 1,16
– 0,36
+ 0,36
+ 0,58
+1,16
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Zn/Zn2+ // Al3+/Al
Zn/Zn2+ // Al/Al3+
Al/Zn // Al3+/Zn2+
Al/Al3+ // Zn2+/Zn
Zn2+/Zn // Al/Al3+
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Cara yang paling tepat digunakan untuk melindungi pipa pengalir minyak bumi yang ditanam dalam tanah dari peristiwa korosi adalah....
Dicat
Dilapisi plastik
Dibalut dengan tembaga
Dilumuri dengan gemuk
Menggunakan perlindangan katodik
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Harga potensial sel Zn ∣ Zn2+ ∣∣ Fe2+ ∣ Fe adalah.....
(E0 Zn2+ = -0,76 Volt dan E0 Fe 2+ = -0,44 Volt )
-1,20 V
-0,32 V
-0,23 V
+0,32 V
+1,20 V
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