PTS Kimia Kelas XII
Quiz
•
Chemistry
•
12th Grade
•
Hard
Abdul Hijaz
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10 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Diantara kelima larutan berikut ini yang mempunyai titik didih paling rendah adalah ….
C6H12O6 0,03 M
Mg(NO3)2 0,02 M
NaCl 0,02 M
Al2(SO4)3 0,01 M
KAl(SO4)2 0,03 M
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Harga ∆Tf dan ∆Tb tergantung pada ….
Jenis zat pelarut
Jenis zat terlarut
Jumlah pelarut
Jumlah zat terlarut
Fraksi mol zat terlarut
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Pada reaksi redoks berikut :
a Fe2+ + b MnO4- + H+ → c Fe3+ + Mn2+ + d H2O
Harga a, b, c, d adalah ….
5,1,5,4
5,1,4,5
5,5,1,4
4,5,5,1
4,5,1,5
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Reaksi reduksi di bawah ini yang membutuhkan 2 elektron adalah ….
SO42- → SO2
NO3- → NO
AlO2- → Al
ClO3- → Cl-
S2O32- → S
5.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Dari data potensial reduksi diketahui :
Ag+ → Ag Eo = +0,80 volt
Mg2+ → Mg Eo = -2,34 volt
Besarnya potensial sel yang bekerja berdasarkan reaksi 2 Ag+ + Mg → 2 Ag + Mg2+ adalah ….
-1,54 volt
-3,14 volt
0,74 volt
1,54 volt
3,14 volt
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Diketahui data potensial electrode sebagai berikut :
Zn2+(aq) + 2e → Zn(s) Eo = -0,76 volt
Mg2+(aq) + 2e → Mg(s) Eo = -2,24 volt
Cu2+(aq) + 2e → Cu(s) Eo = +0,34 volt
Cr3+(aq) + 3e → Cr(s) Eo = -0,74 volt
Harga potensial sel terbesar adalah ….
Zn/Zn2+ // Cu2+/Cu
Zn/Zn2+ // Cr3+/Cr
Mg/Mg2+ // Cr3+/Cr
Cu/Cu2+ // Cr3+/Cr
Mg/Mg2+ // Cu2+/Cu
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Suatu sel volta tersusun dari elektrode-elektrode Zircon (E° = -1,50 V) dan Paladium (E°= +1,20 V).
Pernyataan yang benar adalah….
Paladium merupakan anoda
Zircon mengalami reduksi
Elektron mengalir dari Zircon ke Paladium
Potensial selnya -2,70 volt
Zircon bertindak sebagai elektrode positif
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