UJIAN SEKOLAH KIMIA 2020
Quiz
•
Chemistry
•
12th Grade
•
Hard
Purwaning Astuti
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40 questions
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1.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
4 gram NaOH dilarutkan dalam air hingga 200 mL. Jika massa jenis larutan 1 g/mL, maka molaritas Larutan tersebut adalah ...
0,21 m
0,25 m
0,33 m
0,40 m
0,51 m
2.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Berapa gram gram kristal MgSO4. 7H2O yang harus dilarukan ke dalam 1L air agar diperoleh larutan MgSO4 0.003 M.
0,34 g
0,45 g
0,66 g
0,74 g
0,87 g
3.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Perhatikan gambar grafik P_T di atas
Daerah yang menunjukkan perubahan titik beku adalah ...
A-B
A-C
B-D
C-D
F-A
4.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Besarnya kenaikan titik didih larutan yang terbentuk dari 17,4 gram K2SO4 (Mr = 174), yang terurai sempurna di dalam 250 gram air (Kb = 0,52oC/m) adalah ...
0, 124oC
0, 208oC
0, 444oC
0, 624oC
0, 674oC
5.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Larutan berikut yang memiliki titik beku paling tinggi adalah ...
K2CO3 0,1 M
NaHCO3 0,1 M
Sukrosa 0,1 M
AlCl3 0,1 M
MgSO4 0,2 M
6.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Untuk menaikan titik didih 500 mL air menjadi 100,2 oC pada tekanan 1 atm, jumlah 86,4 gram
34.2 gram
43,2 gram
68,4 gram
86,4 gram
136,8 gram
7.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Peristiwa yang terjadi di elektroda negatif pada elektrolisis larutan Na2SO4 menggunakan elektroda grafit adalah....
Terbentuk logam Natrium
Terbentuk gas Oksigen
Mengubah indikator PP menjadi merah
Larutan bersifat Basa
Terbentuk gas SO2
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