Keseimbangan redoks
Quiz
•
Chemistry
•
5th Grade
•
Practice Problem
•
Medium
ZULFIKRI Moe
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20 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Manakah takrifan tindak balas redoks?
Tindak balas yang melibatkan peningkatan dan penurunan berlaku serentak
Tindak balas yang melibatkan penghidratan dan pendehidratan berlaku serentak
Tindakbalas yang melibatkan pembentukan ikatan kovalen tunggal dan ikatan kovalen ganda dua berlaku serentak
Tindak balas yang melibatkan pengoksidaan dan penurunan berlaku serentak
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Manakah BUKAN cara untuk menentukan suatu tindak balas redoks?
Terima atau kehilangan proton
Terima atau kehilangan oksigen
Terima atau kehilangan hidrogen
Perubahan nombor pengoksidaan.
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Mg + CuO --> MgO + Cu
Berdasarkan persamaan diketahui bahawa
Mg mengalami penurunan
MgO mengalami pengoksidaan
CuO adalah agen pengoksidaan
Cu adalah agen penurunan
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
2Na + Cl2 --> 2NaCl
Persamaan di atas mewakili suatu tindak balas redoks. Manakah yang TIDAK benar?
Natrium mengalami pengoksidaan
Atom natrium menerima satu elektron
Natrium adalah agen penurunan
Cl2 + 2e- --> 2Cl-
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Mg + CuSO4 --> MgSO4 + Cu
Berdasarkan persamaan setengah di atas. Manakah pernyataan yang TIDAK benar?
nombor pengoksidaan bagi atom magnesium pada bahan tindak balas ialah +2
nombor pengoksidaan bagi ion kuprum di dalam kuprum(II) sulfat ialah +2
nombor pengoksidaan bagi ion sulfat di dalam magnesium sulfat ialah -2
nombor pengoksidaan bagi atom kuprum pada hasil tindak balas ialah 0
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
kirakan nombor pengoksidaan bagi ion mangan di dalam ion manganat, MnO4-
+7
+6
+4
+3
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Apakah nama IUPAC bagi bahan yang mempunyai formula ion PbO2?
Plumbum(I) oksida
Plumbum(II) oksida
Plumbum(III) oksida
Plumbum(IV) oksida
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