WorksheetsOxidizing and Reducing Agents
Total questions: 15
Worksheet time: 26mins
Which statement is true of a reducing agent?
It is oxidised as it gains electrons.
It is oxidised as it loses electrons.
It is reduced as it gains electrons.
It is reduced as it loses electrons.
What is the substance that loses hydrogen in a redox reaction?
oxidizing agent
reducing agent
is reduced
decreases in oxidation number
What is the substance that loses oxygen in a redox reaction?
oxidizing agent
reducing agent
is oxidized
increases in oxidation number
When a gas changes iron(III) oxide to iron(II) oxide, the gas is
a combustible gas
a reducing agent
an inert gas
an oxidising agent
What is the colour change of acidified KMnO4(aq) solution as a test for reducing agents?
From green to orange
From orange to green
From purple to colourless
From colourless to purple
Which gas is the strongest reducing agent?
Br-
Cl-
F-
I-
What is the oxidizing agent of this reaction?
3Mg + N2 → Mg3N2
Mg
N2
Mg3N2
MgN
What is the reducing agent of this reaction?
2Al (s) + 6H+ (aq) → 2Al3+ (aq) + 3H2 (g)
H+
Al3+
Al
H2
In redox reactions, what happens to the reducing agent?
It is oxidised
It does not participate in the reaction and remains unchanged
It is reduced
For the following example, identify the oxidizing agent: Na+1 + Cl-1 --> NaCl
Na+1
Cl-1
Both
For the following example, identify the reducing agent:
H2 + Cl2 --> 2HCl
H2
Cl2
Both
What is the oxidizing agent of this reaction?
3Mg + N2−−−−> Mg3N2
Mg
N2
Mg3N2
MgN
What is the species that gain electrons in a redox reaction?
oxidizing agent
reducing agent
is oxidized
increases in oxidation number
Which of the following is a strong oxidizing agent?
Group 1 elements
Group 7 elements
Hydrogen peroxide
Potassium permanganate
Which of the following is a strong reducing agent?
Group 1 elements
Group 7 elements
Hydrogen peroxide
Potassium permanganate
