Let me analyze this reaction:- Glucose (C6H12O6) is oxidized as it loses hydrogen and gains oxygen to form carbon dioxide and water. - Oxygen (O2) is reduced as it gains hydrogen to form water.Since both oxidation and reduction are occurring simultaneously, this is a redox reaction.So the answer is: Yes, the given reaction is a redox reaction

LEARNING OUTCOMES
 DEFINE OXIDATION AND REDUCTION

 IDENTIFY REDOX REACTIONS

Deduce. Determine. Deﬁne.

Cu                CuO
oxidation

Mg                MgO
oxidation

Oxidation occurs when a substance ________________________ .


C                  CO
oxidation

CO                CO2
oxidation



SO2              SO3
oxidation

N2               2NO3
oxidation


DEFINITION

Oxidation occurs when a substance

DEFINITION

gains oxygen atom(s) in a reaction.

CHECKPOINT 1

Did oxidation occur?

CHECKPOINT 1


yes

CHECKPOINT 1


yes

yes

CHECKPOINT 1


yes hydrogen molecule is oxidised 
because it gained oxygen atom 
to form water molecule.

yes

CHECKPOINT 1



yes phosphorous acid is oxidised 
to form phosphoric acid.

CHECKPOINT 1



yes phosphorous acid is oxidised 
to form phosphoric acid.

no

oxidation
reduction

DEFINITION


Reduction occurs when a substance

oxidation
reduction

DEFINITION


loses oxygen atom(s) in a reaction.

phosphorous acid is oxidised 
oxidation to form phosphoric acid.


reduction


phosphoric acid is reduced 
because it lost oxygen atom to 
reduction form phosphoric acid.

CHECKPOINT 2

Fill in the blank.

CO
reduction

CHECKPOINT 2


CO
reduction

C CO2
A B

CHECKPOINT 2


CO
reduction

C CO2
A B

Explain why carbon monoxide is reduced.

CHECKPOINT 2


CO
reduction

C CO2
A B

Explain why carbon monoxide is reduced.
Carbon monoxide is reduced because it lost oxygen atom 
to form carbon.

CHECKPOINT 3


SO2
reduction

S SO3
A B

CHECKPOINT 3


SO2
reduction

S SO3
A B

Sulfur trioxide is reduced because it lost oxygen atom to 
form sulfur dioxide.

CHECKPOINT 4


Cu CuO
reduction

CHECKPOINT 4


Cu CuO
reduction

Copper(II) oxide is reduced because it lost oxygen atom to 
form copper.

CHECKPOINT 5


CuCO3 CuO

oxidation reduction
A B

CHECKPOINT 5


CuCO3 CuO

oxidation reduction
A B

Not sure. Cannot compare the two substances.

LEARNING OUTCOMES



REDOX
reduction oxidation

Redox reaction is a reaction where 
reduction and oxidation takes place at the same time.

Is the following reaction a redox reaction?

C    +   CuO  CO2    +   Cu


C    +   CuO  CO2    +   Cu 

reduction

Copper(II) oxide is reduced because it lost oxygen atom 
to form copper.


oxidation

C    +   CuO  CO2    +   Cu 

reduction

to form copper.

Carbon is oxidised because it gained oxygen atom 
to form carbon dioxide.


oxidation

C    +   CuO  CO2    +   Cu 

reduction

to form copper.

Carbon is oxidised because it gained oxygen atom 
to form carbon dioxide.

Since reduction and oxidation takes place at the same time,
the reaction is a redox reaction.


H2     +   CuO  Cu    +   H2O


H2     +   CuO  Cu    +   H2O 

reduction

to form copper.


oxidation

H2     +   CuO  Cu    +   H2O 

reduction

to form copper.

Hydrogen molecule is oxidised because it gained oxygen atom 

CHECKPOINT


C6H12O6   +   6O2  6CO2    +   6H2O


2H2O                  O2 2NH3                 N2

oxidation oxidation

H2S                     S 2HF                    F2

oxidation oxidation


DEFINITION

loses hydrogen atom(s) in a reaction.

oxidation
reduction

DEFINITION


oxidation
reduction

DEFINITION


gains hydrogen atom(s) in a reaction.

CHECKPOINT


CHECKPOINT


2+ 2+
Mg (s)  +  Cu    (aq)  Mg   (aq)  + Cu (s)

oxidation

2+ 2+
Mg (s)  +  Cu    (aq)  Mg   (aq)  + Cu (s) 

HINT: BALANCE THE HALF EQUATION

2+
Mg (s) 
  Mg    (aq)


DEFINITION

loses electron(s) in a reaction.

oxidation

2+ 2+
Mg (s)  +  Cu    (aq)  Mg   (aq)  + Cu (s) 

reduction

Reduction occurs when a substance

oxidation

2+ 2+
Mg (s)  +  Cu    (aq)  Mg   (aq)  + Cu (s) 

reduction

Reduction occurs when a substance gains electron(s) in a reaction.

oxidation

2+ 2+
Mg (s)  +  Cu    (aq)  Mg   (aq)  + Cu (s) 

reduction

Reduction occurs when a substance gains electron(s) in a reaction.

2+
Cu   (aq) 
  Cu (s)

CHECKPOINT


2+ 2+
Mg (s)  +  Cu    (aq)  Mg   (aq)  + Cu (s) 

reduction

Copper(II) ion is reduced because it gained electrons 
to form copper metal.

CHECKPOINT


oxidation

2+ 2+
Mg (s)  +  Cu    (aq)  Mg   (aq)  + Cu (s) 

reduction


Magnesium metal is oxidised because it lost electrons 
to form magnesium ion.

LEARNING OUTCOMES

LEARNING OUTCOMES


gains electron(s) in a reaction.

LEARNING OUTCOMES

LEARNING OUTCOMES

Redox reaction is a reaction 
where reduction and oxidation 
takes place at the same time.

LEARNING OUTCOMES

Redox reaction is a reaction 
where reduction and oxidation 
takes place at the same time.

When explaining, consider:
1. What species is being reduced/oxidised
2. How they are reduced/oxidised
3. What is formed after reduction/oxidation

Recommended

Recommended

More Related Content

What's hot

What's hot (18)

Recently uploaded

Recently uploaded (20)

Editor's Notes