
UH 2
Authored by asaadahn s55
Chemistry
12th Grade
Used 2+ times

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12 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Biloks atom C pada HCO3- adalah...
+1
+2
+3
+4
+5
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Reaksi redok dibawah ini belum setara
MnO4- + a H+ + bHSO3- ---> Mn2+ + c H2O + SO42-
Berapakah nilai dari a, b dan c
1 - 3 - 2
1 - 5 - 3
1 - 7 - 4
2 - 2 - 2
2 - 4 - 3
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Reaksi redoks dibawah ini belum setara
MnO4- + H+ + HSO3- ---> Mn2+ + H2O + SO42-
berapakah perubahan biloks Mn
+3 ke +2
+4 ke +2
+5 ke +2
+6 ke +2
+7 ke +2
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Reaksi redoks dibawah ini belum setara
a H2O + I- + MnO4- ---> I2 + Mn2+ + b OH-
Berapakah nilai a dan b
4 dan 8
5 dan 10
6 dan 12
7 dan 14
8 dan 16
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Reaksi redoks dibawah ini belum setara,
a KI + NaClO3 +b H2SO4 ---> c I2 +
d K2SO4 + NaCl + H2O
Berapakah nilai a, b, c dan d
4 - 2 - 2 - 2
4 - 3 - 3 - 3
6 - 2 - 2 - 2
6 - 3 - 3 - 3
6 - 4 - 4 - 4
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Cu2+ + Fe → Fe2+ + Cu Eo Sel = +0,78 V
Cu2+ + Zn → Zn2+ + Cu Eo Sel = +1,1 V
Cu2+ + Pb → Pb2+ + Cu Eo Sel = +0,47 V
Berdasrkan data diatas urutan kekuatan oksidator dari yang terendah ke yang tertinggi ialah....
Cu < Pb < Fe < Zn
Cu < Zn < Fe < Pb
Zn < Fe < Pb < Cu
Fe < Zn < Pb < Cu
Zn < Pb < Fe < Cu
7.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Cd I Cd2+ II Ag+ I Ag Eo = + 1,20 V
Cd I Cd2+ II Cu2+ I Cu Eo = + 0,74 V
Pb I Pb2+ II Ag+ I Ag Eo = + 0,93 V
Na I Na+ II Pb2+ I Pb Eo = + 2,58 V
Tentukanlah logam mana yang menjadi oksidator terkuat...
Cd
Ag
Cu
Pb
Na
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