Question
Name different types of chemical reactions; and explain it with suitable example.
✓
Answer
- Name of different types of chemical reactions with suitable example are given below:
- $1.$ Combination reaction:
- Two or more than two reactants combine together to form a single product.
- For example, $CaO ( s )+ H _2 O ( l ) \rightarrow Ca ( OH )_2( aq )$
- $2.$ Decomposition reaction:
- A single reactant, on heating decomposes to form more than one product.
- For example, $CaCO _3(s) \xrightarrow{ Heat } CaO ( s )+ CO _2(g)$
- $3.$ Displacement reaction:
- More reactive metal displaces the less reactive metal from its compound.
- For example,
- $Fe ( s )+ CuSO _4( aq ) \rightarrow FeSO _4( aq )+ Cu ( s )$
- $4.$ Double displacement reaction:
- In this an exchange of ions occurs between two compounds.
- For example,
- $Na _2 SO _4( aq )+ BaCl _2( aq ) \rightarrow BaSO _4(s)+2 NaCl ( aq )$
- $5.$ Oxidation reaction:
- A reaction in which oxygen is added or hydrogen is removed is called an oxidation reaction.
- For example, $C ( s )+ O _2(g) \rightarrow CO _2(g)$
- $6.$ Reduction reaction:
- A reaction in which hydrogen is added or oxygen is removed is called reduction reaction.
- For example, $CuO + H _2 \rightarrow Cu + H _2 O$
- $7.$ Precipitation reaction:
- In this reaction, insoluble salt is formed.
- For example,
- $AgNO _3+ NaCl \rightarrow AgCl + NaNO _3$
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