mid xii mia
Quiz
•
Chemistry
•
12th Grade
•
Practice Problem
•
Hard
DESSY PUTRI
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10 questions
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1.
MULTIPLE CHOICE QUESTION
10 mins • 12 pts
Reaksi berikut disetarakan dengan metode biloks: Cu+HNO3→Cu(NO3)2+NO2+H2O Koefisien HNO₃ setelah disetarakan adalah…
5
2
3
4
2.
MULTIPLE CHOICE QUESTION
10 mins • 14 pts
Titik didih air adalah 100°C. Jika ke dalam 1 kg air dilarutkan 1 mol glukosa (Kb air = 0,52°C/m), maka titik didih larutan adalah…
101,04°C
100,26°C
100,52°C
101,52°C
3.
MULTIPLE CHOICE QUESTION
5 mins • 14 pts
Sebanyak 18 gram air (Mr = 18) dicampur dengan 46 gram etanol (Mr = 46). Tentukan fraksi mol air (Xair)!
0,20
0,33
0,50
0,67
4.
MULTIPLE CHOICE QUESTION
5 mins • 12 pts
Jika E°(Zn²⁺/Zn) = –0,76 V dan E°(Cu²⁺/Cu) = +0,34 V, maka potensial sel (E°sel) dari sel Zn–Cu adalah…
–0,42 V
+0,42 V
–1,10 V
+1,10 V
5.
MULTIPLE CHOICE QUESTION
5 mins • 12 pts
Jika 10 gram NaCl (Mr = 58,5) dilarutkan dalam 500 mL air, maka molaritas larutan tersebut adalah…
0,3 M
0,1 M
0,2 M
0,4 M
6.
MULTIPLE CHOICE QUESTION
5 mins • 11 pts
Dalam reaksi:
2 FeCl₂ + Cl₂ → 2 FeCl₃
unsur yang mengalami oksidasi adalah …
Fe
Cl dalam Cl₂
Cl dalam FeCl₂
Tidak ada yang berubah
7.
MULTIPLE CHOICE QUESTION
5 mins • 10 pts
Bilangan oksidasi sulfur dalam senyawa H₂SO₃ adalah …
+2
+4
+6
–2
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