
PTS Kelas XII
Authored by Melisa Muhridja
Chemistry
12th Grade
Used 5+ times

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9 questions
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1.
MULTIPLE CHOICE QUESTION
5 mins • 10 pts
Diantara reaksi – reaksi berikut yang merupakan reaksi reduksi adalah ,,,,
2Cl – → Cl2
Cu 2+ → Cu
Zn → Zn 2+
Fe 2+ → Fe 3+
CaO + O2 → CaCO3
2.
MULTIPLE CHOICE QUESTION
5 mins • 10 pts
Suatu zat organik sebanyak 0,645 gram yang dilarutkan dalam 50 gram CCl4 memberikan ∆Tb = 0,645oC. Jika Kb pelarut = 5,0oC/m, maka massa molekul relatif zat itu adalah …
100
80
60
50
70
3.
MULTIPLE CHOICE QUESTION
5 mins • 10 pts
Di antara senyawa-senyawa klorin di bawah ini, Cl yang mempunyai bilangan oksidasi tertinggi adalah...
Cl2
Cl-
KClO
HClO2
HCl
4.
MULTIPLE CHOICE QUESTION
5 mins • 10 pts
Bilangan oksidasi Cr dalam K2Cr2O7 adalah...
- 12
+ 5
+12
- 6
+ 6
5.
MULTIPLE CHOICE QUESTION
5 mins • 10 pts
Pada persamaan reaksi redoks:
aKMnO4 (aq) + bHCl (aq) ---> cMnCl2 (aq) + dCl2 (aq) + H2O (l) + KCl (aq)
Nilai koefisien reaksi b, c dan d berturut-turut adalah....
8, 5 dan 3
10, 2 dan 5
12, 4 dan 5
14, 5 dan 2
16, 2 dan 5
6.
MULTIPLE CHOICE QUESTION
5 mins • 10 pts
Fraksi mol urea dalam air adalah 0,2. Tekanan uap jenuh air murni pada suhu 20˚C sebesar 17,5 mmHg. Maka tekanan uap jenuh larutan pada suhu itu adalah …
3,5
14
17,5
17,7
21
7.
MULTIPLE CHOICE QUESTION
5 mins • 10 pts
Sebanyak 34,2 gram gula pasir dilarutkan dalam 250 gram air. Jika kenaikan titik didih molal air = 0,5oC/m, maka titik didih larutan tersebut adalah .... (Mr gula pasir = 342)
100,04 oC
100,40 oC
101,40 oC
100,20 oC
100,80 oC
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