ULANGAN KIMIA KELAS X SEMESTER 2 SMA NEGERI 1 KARANGANYAR
Quiz
•
Chemistry
•
1st Grade
•
Practice Problem
•
Medium
setyowati adikoyo
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10 questions
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1.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Perhatikan persamaan rekasi reduksi dan oskidasi berikut :
K2CrO4(aq) + KI(aq) + H2SO4(aq) ==> Cr2(SO4)3(aq) I2(aq) + K2SO4(aq) + H2O(l)
Bilangan oksidasi Cr berubah dari . . . . .
– 2 menjadi + 3
-1 menjadi +3
+6 menjadi -4
+6 menjadi +3
+ 12 menjadi + 8
2.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Diantara reaksi rekasi berikut manakah yang merupakan reaksi redoks adalah . . . . .
H2(g) + CuO(g) ==> Cu(s) + H2O(l)
SO3(g) + H2O(g) ==>-H2SO4(aq)
AgNO3(aq) + NaCl(aq) ==> AgCl(s) NaNO3(aq)
H2SO4(aq) + 2NaOH(aq) ==>Na2SO4(aq) + 2H2O(l)
KOH(aq) + CH3COOH(aq) ==> CH3COOK(aq) + H2O(l)
3.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Pada reaksi dibawah ini :
MnO2 + 4HCl == > MnCl2 + 2 H2O + Cl2
Yang berperan sebagai oksidator adalah . . . . .
MnO2
MnCl2
H2O
HCl
Cl2
4.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Mn yang ditemukan dengan bilangan oksidasi +6 ada pada senyawa . . . . .
MnO
MnCl2
MnSO4
KMnO4
K2MnO4
5.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Reaksi redoks mempunyai persamaan reaksi sebagai berikut.
NaHSO4 + Al + NaOH ==> Na2S + Al2O3 + H2O
Pasangan reduktor dan hasinya pada persamaan reaksi tersebut adalah . . . . .
NaHSO4 dan Na2S
NaOH dan Na2S
Al dan Al2O3
NaOH dan H2O
NaOH dan Al2O3
6.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Unsur N memiliki banyak bilangan osidasi yaitu dari -3 hingga +5. Ion atau molekul berikut yang tidak dapat mengalami rekasi disproporsionasi adalah . . . . .
N2 dan NO2
N2 dan NH3
NO2 dan NO3-
NH3 dan NO3-
N2O3 dan NO2
7.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Rumus kimia senyawa timbal(II)nitrat adalah . . . . .
PbNO3
Pb2NO3
Pb(NO3)2
Pb2(NO2)3
Pn(NO2)3
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