Sekali lagi (reaksi reduksi oksidasi)
Quiz
•
Chemistry
•
10th Grade
•
Practice Problem
•
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Yenny Dwi
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10 questions
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1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Di antara reaksi-reaksi tersebut di bawah ini yang merupakan contoh reaksi redoks adalah ….
AgNO3(aq) + NaCl(aq) → AgCl(s) + NaNO3(aq)
2KI(aq) + Cl2(aq) → I2(s) + 2KCI(aq)
NH3(aq) + H2O(l) → NH4+(aq) + OH-(aq)
NaOH(aq) + CH3COOH(aq) → CH3COONa(aq) + H2O(l)
Al2O3(s) + 2NaOH(aq) → 2NaAlO2(aq) + H2O(l)
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Bilangan oksidasi Br terendah terdapat pada senyawa ….
Fe(BrO2)3
Ca(BrO)2
HBrO4
AlBr3
KBrO3
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Perhatikan persamaan reaksi redoks berikut
Sn + 4HNO3 → SnO2 + 4NO2 + 2H2O
Bilangan oksidasi dari zat reduktor dan hasil oksidasinya berturut-turut adalah ....
0, SnO2
+1, SnO2
+4, NO2
+5, NO2
+5, HNO3
4.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Pasangan yang tepat antara rumus dan nama senyawanya adalah ....
(1) dan (3)
(1) dan (4)
(2) dan (3)
(2) dan (4)
(3) dan (5)
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Penamaan senyawa berikut benar, kecuali....
N2O5 = dinitrogen pentaoksida
PCl3 = fosfor triklorida
CCl4 = tetrakarbon klorida
P2O5 = difosfor pentaoksida
CO = karbon monoksida
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Soda kue yang digunakan untuk mengembangkan roti terdiri dari NaHCO3 dan asam yang dikeringkan, apabila tercampur dengan air, asam akan teraktivasi dan bereaksi dengan NaHCO3 menghasilkan gas CO2 yang menaikkan adonan. Persamaan reaksi NaHCO3 dengan asam yang tepat adalah ….
NaHCO3 + ½ H+ → Na+ + H2 + ½ O2 + CO2
NaHCO3 + 2 H+ → NaOH + CO2 + H2
NaHCO3 + H+ → Na+ + H2O + CO2
NaHCO3 + H+ → NaH + OH- + CO2
NaHCO3 + H+ → Na + O2 + H2O + H2 + 2CO2
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
pasangan unsur kimia senyawa yang dapat terbentuk dari kation Li+, Sn2+, Fe3+ dan anion O2-, OH-, NO2- adalah....
SnO2 dan FeO
LiO2 dan SnO2
Li2O dan Fe(OH)3
Fe3O2 dan LiNO2
Sn(OH)3 dan Fe(OH)2
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