Reaksi Redoks Rem ( LM )_S2
Quiz
•
Chemistry
•
12th Grade
•
Practice Problem
•
Medium
Ris Suhaemah
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13 questions
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1.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Kalium permanganat dalam kehidupan sehari-hari kita kenal dengan nama "PK" mempunyai rumus KMnO4 yang jika dilarutkan dalam air akan memberikan warna ungu. PK dalam larutan basa mengalami reduksi menghasilkan K2MnO4 yang memberikan warna hijau yang mempunyai bilangan oksidasi Mn sama dengan ....
+7
+6
+5
+4
+2
2.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Kalium permanganat ( PK ) mempunyai rumus KMnO4 dalam larutan asam " accu zuur " mengalami reduksi menjadi MnSO4. Unsur mangan (Mn) dalam reaksi ini mengalami perubahan bilangan oksidasi sebesar ....
5
4
3
2
1
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Dari reaksi kimia berikut yang bukan reaksi redoks adalah ....
2CuO + CO -----> Cu2O + CO2
Cl2 + 2KBr -----> 2KCl + Br2
Mg + 2HCl → MgCl2 + H2
KI + AgNO3 → KNO3 + AgI
Zn + CuSO4 → Cu + ZnSO4
4.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Perhatikan reaksi redoks yang terjadi pada pengolahan bijih besi berikut :
Fe2O3 + CO -----> Fe + CO2
Yang mengalami reaksi reduksi adalah ....
Fe2O3
CO
Fe
CO2
O2
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Perhatikan reaksi redoks berikut :
2CuSO4 + 4KI -----> 2CuI + I2 + 2K2SO4
Zat yang berperan sebagai reduktor pada reaksi tersebut adalah ....
CuSO4
KI
CuI
I2
K2SO4
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Pernyataan yang benar pada penyetaraan reaksi:
Sn + HNO3 → SnO2 + NO2 + H2O adalah .....
Sn mengalami penurunan biloks dan menerima 2 elektron
N mengalami kenaikan biloks dan melepaskan 5 elektron
Sn mengalami kenaikan biloks dan melepaskan 4 elektron
N mengalami penurunan biloks dan menerima 3 elektron
N mengalami penurunan biloks dan menerima 2 elektron
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Pada reaksi redoks ( belum setara )
H2S + HNO3 → S + NO + H2O
pernyataan yang benar dalam penyetaraan reaksinya adalah .…
Setengah reaksi reduksi : H2S + 2e → S
Setengah reaksi oksidasi : HNO3 → NO + 3e
Setengah reaksi oksidasi : H2S → S + 3e
Setengah reaksi reduksi : HNO3 + 2e → NO
Jumlah elektron yang terlibat dalam penyetaraan reaksi sebanyak 6e
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