
SOAL UJIAN SEMESTER GANJIL

Quiz
•
Chemistry
•
11th Grade
•
Medium
Pipit Suharmami
Used 1+ times
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40 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Sebanyak 11,2 gram serbuk besi (Fe) dipanaskan secara sempurna dengan 6,4 gram serbuk belerang (S), sesuai reaksi:
Fe + S → FeS
Senyawa besi(II) sulfida (FeS) yang terbentuk sebanyak .....
6,4 gram
11,2 gram
12,8 gram
17,6 gram
22,4 gram
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Jumlah mol dari 29,8 gram amonium fosfat ((NH4)3PO4) (Ar N = 14, H = 1, dan P = 31) adalah .....
0,05 mol
0,15 mol
0,20 mol
0,25 mol
1,10 mol
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Apabila kristal BaCl2 .x H2O (Ar Ba = 137, Cl = 35,5, H = 1, dan O = 16) mengandung 14,75% air kristal, maka rumus yang tepat untuk kristal tersebut adalah … .
BaCl2 .H2O
BaCl2 .4 H2O
BaCl2 .2 H2O
BaCl2 .5 H2O
BaCl2 .3 H2O
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Sejumlah 3,2 gram gas CH4 dibakar dengan 16 gram O2 sesuai reaksi:
CH4 (g) + 2 O2 (g) ⎯⎯→ CO2 (g) + 2 H2O(l)
Jika Ar C = 12, H = 1, dan O = 16, maka massa CO2 yang terbentuk adalah … .
1,1 gram
11 gram
2,2 gram
22 gram
8,8 gram
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Penguraian 24,5 gram KClO3 (Ar K = 39, Cl = 35,5, dan O = 16) menurut reaksi:
2 KClO3 ⎯⎯→ 2 KCl + 3 O2.
Pada keadaan standar dihasilkan gas oksigen sebanyak … .
2,24 liter
8,96 liter
4,48 liter
11,2 liter
6,72 liter
6.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Letak unsur dan konfigurasi elektron yang tepat untuk unsur 19X adalah…(nomor atom Ar = 18)
Periode 4, golongan IA, [Ar] 4s1
Periode 1, golongan IB, [Ar] 4d1
Periode 1, golongan IIA, [Ar] 4s2
Periode 2, golongan IIB, [Ar] 4d2
Periode 3, golongan IVA, [Ar] 4s2 3d2
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Harga keempat bilangan kuantum elektron terakhir dari atom 16S adalah…
n = 2, l = 0, m = 0, s = -1/2
n = 3, l = 1, m = -1, s = -1/2
n = 3, l = 1, m = 0, s = -1/2
n = 3, l = 1, m = 0, s = +1/2
n = 3, l = 1, m = +1, s = +1/2
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