Kuis Kimia
Quiz
•
Chemistry
•
12th Grade
•
Hard
Ir S
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20 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
Unsur X dengan nomor atom 5 dan unsur Y dengan nomor atom 17 membentuk senyawa XY3. Bentuk molekul senyawa tersebut adalah…..
Linear
Piramida
Trigonal planar
Tetrahedral
Bujur sangkar
2.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
Suatu larutan dibuat dengan cara melarutkkan 3 gram urea CO(NH2)2 dalam 100 gram air (Kb air = 0,52˚C/m, Tb˚ = 100˚C, Ar C = 12, O = 16, N = 14, H =1). Berapa besarnya titik didih larutan urea tersebut…..
90,26˚C
90,56˚C
95,26˚C
100,26˚C
100,76˚C
3.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
Arus listrik 5A diberikan kedalam larutan kromium (III) nitrat selama 30 menit. Berapa gram massa logam kromium akan terendapkan pada katoda adalah….. (Ar kromium = 52)
0,62 gram
1,62 gram
3,26 gram
4,26 gram
6,26 gram
4.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
Sebanyak 5 mol gas amoniak dimasukan kedalam suatu wadah, dan terurai sebanyak 2 mol menghasilkan gas nitrogen dan gas hidrogen, dengan reaksi:
2NH3 (g) ⇄ N2 (g) + 3H2 (g)
Campuran gas-gas pada kesetimbangan menimbulkan tekanan total 3,5 atm. Maka harga Kp adalah…..
0,25
0,5
0,75
1,0
1,25
5.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
Diantara zat berikut, yang menunjukkan bahwa rumus empiris sama dengan rumus molekul adalah…..
H2O
H2O2
C2H4O2
C6H6
B2H6
6.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
Sebanyak 4 mol SO3 dimasukkan dalam bejana 0,5 liter dan terurai menurut reaksi:
2SO3 (g) ⇄ 2SO2 (g) + O2 (g)
Jika pada saat kesetimbangan masih ada 1 mol SO3 maka tetapan kesetimbangan reaksi tersebut adalah…..
0,5
1,0
13,5
27
40,5
7.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
Pada suhu dan tekanan tertentu terjadi pembakaran sempurna gas C₂H6 oleh 3,5 liter gas O2 dengan persamaan reaksi:
C₂H6 (g) + O2 (g) à CO2 (g) + H2O (g)
Volume gas CO2 yang dihasilkan adalah.....
2 liter
3,5 liter
5 liter
6 liter
14 liter
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