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WorksheetsRedox equilibrium
Total questions: 15
Worksheet time: 12mins
Tick the correct answer.
Fe → Fe2+ + 2e-
Oxidation
Reduction
Tick the correct answer
4OH- → 2H2O + O2 + 4e-
Reduction
Oxidation
Which substance is the reducing agent?
2Fe2+(aq) + Cl2 (aq) →2Fe3+(s) +2Cl- (aq)
Fe2+
Cl2
The equation below shows the reaction between sodium and water to form sodium hydroxide and hydrogen.
2Na + 2H2O →2NaOH +H2
In this reaction, Na undergoes _______________ and H2O undergoes _____________
Na - oxidation
H2O - reduction
Na - reduction
H2O - oxidation
Which of the following represents an oxidizing agent?
Zinc
Bromine water
Potassium iodide solution
Acidified potassium manganate(VII) solution
which element, if any, is oxidized?
Choose all the statements which are correct for an oxidising agent.
removes hydrogen
gains oxygen
is reduced at the end of the reaction
accepts electrons
Combustion and single-replacement reactions are __________ redox reactions.
always
never
sometimes
mostly
What will be the result of the following:
Br2 + NaF ->
bromine will replace Na
Na will replace Br
Br will replace F
no reaction will occur
What reaction occurs at the anode?
Ag+ + e- →Ag
Ag → Ag+ + e-
Ni2+ + 2e- → Ni
Ni → Ni2+ + 2e-
(a) Zn2+(aq) + 2e- -> Zn(s) -0.76
(b) Cr3+(aq) + 3e- -> Cr(s) -0.74
(c) Fe2+ (aq) + 2e- -> Fe(s) -0.41
correct decreasing order of reducing agents is
a>b>c
b>a>c
c>a>b
c>b>a
