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WorksheetsRedox reaction
Total questions: 15
Worksheet time: 15mins
Which of the following CANNOT occur during oxidation?
Antara berikut yang manakah TIDAK berlaku semasa proses pengoksidaan?
Gain of oxygen
Menerima oksigen
Donation of electron
Menderma elektron
Loss of hydrogen
Kehilangan hidrogen
Decrease in oxidation number
Pengurangan nombor pengoksidaan
What is the meaning of reduction?
Apakah maksud penurunan?
Gain of electron
Terima elektron
Gain of oxygen
Terima oksigen
Loss of hydrogen
Hilang hidrogen
Increase in oxidation number
Penambahan nombor pengoksidaan
Which of the following is a reduction reaction?
Antara yang berikut, yang manakah tindak balas penurunan?
Carbon gain oxygen
Karbon menerima oksigen
Zinc atom loses electron
Atom zink kehilangan elektron
Hydrogen sulfide loses hydrogen
Hidrogen sulfida kehilangan hidrogen
Bromine molecule gains electron
Molekul bromin menerima elektron
Which of the following is an oxidation process?
Antara yang berikut, yang manakah proses pengoksidaan?
Carbon dioxide loses oxygen
Karbon dioksida kehilangan oksigen
A bromine atom gains an electron
Satu atom bromin menerima satu elektron
A chlorine molecules gains hydrogen
Satu molekul klorin menerima hidrogen
A sodium atom loses an electron
Satu atom natrium kehilangan satu elektron
The following ionic equation represents a redox reaction
Persamaan ion berikut mewakili satu tindak balas redoks
Al + 3Ag+ -----> Al3+ + 3Ag
Which statement is correct?
Pernyataan manakah yang betul?
Silver ion is oxidized
Ion argentum dioksidakan
Silver ion is a reducing agent
Ion argentum adalah satu agen penurunan
Aluminium atom undergoes oxidation
Atom aluminium mengalami pengoksidaan
Aluminium atom receives electrons
Atom aluminium menerima elektron
Which statement defines oxidation?
Pernyataan manakah yang mendefinisikan pengoksidaan?
Increase in oxidation number
Penambahan nombor pengoksidaan
Gain of hydrogen
Terima hidrogen
Loss of oxygen
Hilang oksigen
Gain of electron
Terima elektron
Which half equations show that the reactant acts as a reducing agent?
Persamaan setengah manakah yang menunjukkan bahan tindak balas sebagai agen penurunan?
I Mg ----> Mg2+ + 2e
II Cu2+ + 2e ------> Cu
III 2Cl- -----> Cl2 + 2e
IV 2H+ + 2e -----> H2
I and II
I and III
II and IV
III and IV
Mg + CuO ------->MgO + Cu
Bahan manakah adalah agen pengoksidaan?
Which substance is oxidising agent?
Mg
CuO
MgO
Cu
Reduction occur when ....
Penurunan berlaku apabila....
Hydrogen chloride lose hydrogen
Hidrogen klorida kehilangan hidrogen
Copper(II) oxide lose oxygen
Kuprum(II) oksida kehilangan oksigen
Magnesium atom release electron
Atom magnesium kehilangan elektron
Zinc atom change to zinc ion
Atom zink berubah menjadi ion zink
What is oxidation number of O2 molecule
Apakah nombor pengoksidaan bagi molekul O2
-2
0
+1
+2
What is the oxidation number of X in XO4-
Apakah nombor pengoksidaan X dalam XO4-
+4
+5
+7
+8
What is the oxidation number of chromium element in Potassium dichromate (VI) , K2Cr2O7?
Berapakah nombor pengoksidaan bagi unsur kromium dalam
kalium dikromat (VI), K2Cr2O7?
+2
+3
+5
+6
The following ionic equation shows the reaction between zinc and acid
Persamaan ion berikut menunjukkan tindak balas antara zink dengan asid
Zn + 2H+ -------> Zn2+ + H2
What is the change in oxidation number of hydrogen?
Apakah perubahan nombor pengoksidaan bagi hidrogen?
0 to +1
0 to +2
+1 to 0
+1 to +2
What is the oxidation number of X in X2O32- ion?
Apakah nombor pengoksidaan bagi X dalam ion X2O32-?
+4
+2
-2
-4
What is the oxidation number of oxygen in the thiosulphate ion, S2O32-?
Apakah nombor pengoksidaan bagi oksigen dalam ion tiosulfat , S2O32-?
-3
-2
+2
+3
