
Kuis Kimia Pertemuan 2
Authored by Ir S
Chemistry
12th Grade

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5 questions
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1.
MULTIPLE CHOICE QUESTION
3 mins • 20 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
2.
MULTIPLE CHOICE QUESTION
3 mins • 20 pts
Bilangan oksidasi atom P dalam PH4+, PO23-, PO43-, dan PO33- adalah…..
-3, +3, +5, +1
-3, +1, +3, +5
-3, +1, +5, +3
+3, -3, +5, +1
-3, -1, +3, +5
3.
MULTIPLE CHOICE QUESTION
3 mins • 20 pts
Diantara zat berikut, yang menunjukkan bahwa rumus empiris sama dengan rumus molekul adalah…..
H2O
H2O2
C2H4O2
C6H6
B2H6
4.
MULTIPLE CHOICE QUESTION
3 mins • 20 pts
Sebanyak 10 liter gas hidrogen direaksikan dengan 10 liter gas oksigen hingga membentuk reaksi kesetimbangan:
2H2 (g) + O2 (g) ⇄ 2H2O (g)
Pada saat kesetimbangan, terbentuk 5 liter uap air diukur pada suhu dan tekanan yang sama. Volume sistem adalah…..
2,5 liter
5,0 liter
7,5 liter
10,0 liter
17,5 liter
5.
MULTIPLE CHOICE QUESTION
3 mins • 20 pts
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
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