1) Displacement reactions can be classified as metal-metal displacement reactions or metal-nonmetal displacement reactions.
2) In metal-metal displacement reactions, more reactive metals displace less reactive metals according to the reactivity series. For example, copper displaces iron when an iron bar is placed in copper sulfate solution.
3) In metal-nonmetal displacement reactions, metals can displace hydrogen from water, with more reactive metals like sodium displacing hydrogen even at room temperature, while less reactive metals like iron only displacing hydrogen when heated.
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Displacement reaction
1. CBSE - 10 Chemical Reactions and Equations
Chemistry Types of Chemical Reactions
Displacement Reaction We can classify displacement
reactions further into metal-
metal displacement and
metal-nonmetal displacement
Displacement Reaction reactions.
Metal-metal Metal - non-metal
Subtopic ID: 01.03.03
2. CBSE - 10 Chemical Reactions and Equations
Chemistry Types of Chemical Reactions
Displacement Reaction According to reactivity series
the most reactive metals
Metal – Metal Displacement replace the less reactive
metals.
Subtopic ID: 01.03.03
3. CBSE - 10 Chemical Reactions and Equations
Chemistry Types of Chemical Reactions
Displacement Reaction
When we dip iron bar in
Metal – Metal Displacement copper sulphate solution
copper displaces iron and
hence it appears brownish.
This is a very good example of
metal-metal displacement
reaction.
Fe + CuSO4 FeSO4 + Cu
Subtopic ID: 01.03.03
4. CBSE - 10 Chemical Reactions and Equations
Chemistry Types of Chemical Reactions
Displacement Reaction
Click the view answer button
Metal – Metal Displacement to find out the product.
Complete the reaction
Cu + AgNO3 _____ + _____
View answer
Subtopic ID: 01.03.03
5. CBSE - 10 Chemical Reactions and Equations
Chemistry Types of Chemical Reactions
Displacement Reaction Since copper is more reactive
than silver copper replaces
Metal – Metal Displacement silver in this reaction.
Cu + 2AgNO3 2Ag + Cu(NO3)2
Copper coil
Silver nitrate solution Silver and copper nitrate solution
Subtopic ID: 01.03.03
6. CBSE - 10 Chemical Reactions and Equations
Chemistry Types of Chemical Reactions
Displacement Reaction Sometimes, a metal displaces
a non-metal. Different metals
Metal – Non-metal Displacement have different reactivities with
various non-metals such as
2Na + 2H2O 2NaOH + H2 ↑ oxygen and hydrogen. For
example, sodium reacts
violently with water, even at
room temperature to replace
hydrogen, the non-metal.
Reaction of sodium with water
Subtopic ID: 01.03.03
7. CBSE - 10 Chemical Reactions and Equations
Chemistry Types of Chemical Reactions
Displacement Reaction Hydrogen in water is replaced
by magnesium only on
Metal – Non-metal Displacement heating.
Heat
Mg + H2O MgO + H2 ↑
Magnesium powder Magnesium oxide
Subtopic ID: 01.03.03
8. CBSE - 10 Chemical Reactions and Equations
Chemistry Types of Chemical Reactions
Displacement Reaction Copper does not react with
water. Sodium is more
Metal – Non-metal Displacement reactive with water. Thus we
Order of reactivity of metals with water can predict the non-metal
displacement by the order of
reactivity.
Na > Mg > Fe > Cu
Reaction of sodium with water
Subtopic ID: 01.03.03
9. CBSE - 10 Chemical Reactions and Equations
Chemistry Types of Chemical Reactions
Displacement Reaction
Click the view answer button
Metal – Non-metal Displacement to find out the products.
Iron reacts with steam when it is red hot.
Complete the equation
Fe + H2O Red hot _____ + ______
View answer
Subtopic ID: 01.03.03
10. CBSE - 10 Chemical Reactions and Equations
Chemistry Types of Chemical Reactions
Displacement Reaction
Iron replaces hydrogen from
Metal – Non-metal Displacement water.
Red hot
3Fe + 4H2O Fe3O4 + 4H2 ↑
Subtopic ID: 01.03.03
11. CBSE - 10 Chemical Reactions and Equations
Chemistry Types of Chemical Reactions
Displacement Reaction
Two compounds react to form
Double Displacement different compounds by mutual
exchange of ions or atoms in a
double displacement reaction.
Double Displacement
Mutual exchange of ions in two different
compounds
Subtopic ID: 01.03.03
12. CBSE - 10 Chemical Reactions and Equations
Chemistry Types of Chemical Reactions
Displacement Reaction
When silver nitrate reacts
Double Displacement with potassium chloride, it
gives silver chloride and
potassium nitrate.
AgNO3 + KCl AgCl + KNO3
Silver nitrate solution Silver chloride solution
(Colourless) (Curdy white precipitate)
Subtopic ID: 01.03.03
13. CBSE - 10 Chemical Reactions and Equations
Chemistry Types of Chemical Reactions
Displacement Reaction
Click the view answer button
Double Displacement to find out the product.
What happens when barium chloride is treated with
sodium sulphate?
View answer
Subtopic ID: 01.03.03
14. CBSE - 10 Chemical Reactions and Equations
Chemistry Types of Chemical Reactions
Displacement Reaction
Double Displacement Barium chloride gives
a white precipitate of
barium sulphate and
BaCl2 + Na2SO4 BaSO4 ↓ + 2NaCl sodium chloride.
Subtopic ID: 01.03.03
15. CBSE - 10 Chemical Reactions and Equations
Chemistry Types of Chemical Reactions
Displacement Reaction Neutralisation is also an
example of double
Neutralisation
displacement reaction.
Acid reacts with base to
form salt and water.
Neutralisation
Acid + Base Salt + Water
Subtopic ID: 01.03.03
16. CBSE - 10 Chemical Reactions and Equations
Chemistry Types of Chemical Reactions
Displacement Reaction Equimolar mixture of sodium
hydroxide and hydrochloric
Neutralisation Neutralisation
acid result neutralisation
NaOH + HCl NaCl + H2O mixture, containing sodium
chloride salt and water .
When we add a few drops of
phenolphthalein indicator to
the neutralisation mixture
with a slight excess of alkali
it give a pale pink colour.
Pale pink colour of neutralisation
Colourless neturalisation mixture with slight excess of
mixture NaOH
Subtopic ID: 01.03.03
17. CBSE - 10 Chemical Reactions and Equations
Chemistry Types of Chemical Reactions
Displacement Reaction
Click the view answer button
Neutralisation to find out the product.
Complete the reaction
Ca(OH)2 + H2SO4 ____ + ___
View answer
Subtopic ID: 01.03.03
18. CBSE - 10 Chemical Reactions and Equations
Chemistry Types of Chemical Reactions
Displacement Reaction
Calcium hydroxide reacts with
Neutralisation sulphuric acid to form calcium
sulphate and water.
Ca(OH)2 + H2SO4 CaSO4↓ +2H2O
Calcium hydroxide
Calcium sulphate
Sulphuric acid
Subtopic ID: 01.03.03