d. Explain the types of reaction
with examples.
Answers
Answer:
The main four types of reactions are direct combination, analysis reaction, single displacement, and double displacement. If you're asked the five main types of reactions, it is these four and then either acid-base or redox (depending who you ask
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Answer:
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What are the types of chemical reaction? Explain the four types of chemical reaction with example.
Answer
The different types of chemical reaction are:
1. Combination reaction
2. Decomposition reaction
3. Displacement reaction
4. Neutralisation reaction
5. Double displacement reaction
6. Oxidation and reduction reaction
1. Combination reaction:
In a combination reaction, two or more elements combine to form a compound or an element and a compound can combine to form a new compound
For example:
Magnesium and oxygen combine when heated to form magnesium oxide.
2Mg(s)+O
2
(g)
Combination
2MgO(s)
2. Displacement reaction:
Those reactions in which one element takes the place of another element in a compound, are known as displacement reaction. In general a more reactive element displacement reaction. In general, a more reactive element displaces a less reactive element from its compound.
For example:
When a strip zinc metal is placed in a copper sulphate solution, then zinc sulphate solution and copper are obtained:
CuSO
4
(aq)+Zn(s)→ZnSO
4
(aq)+Cu(s)
In this reaction zinc displaces copper from copper sulphate solution.
3. Double displacement reaction:
Those reactions in which two compounds by the exchange of ions to form two new compound are called double displacement reactions. A double displacement reaction usually occurs in solution and one of the products, being insoluble, precipitates out.
For example:
When silver nitrate solution is added to sodium chloride solution, then a white precipitate of silver chloride is formed long with sodium nitrate solution :
AgNO
2
(aq)+NaCl(aq)→AgCl(s)+NaNO
3
.
In this double displacement reaction, two compounds, silver nitrate and sodium nitrate.
4. Oxidation and reduction reactions:
Oxidation:
1. The addition of oxygen to a substance is called oxidation.
2. The removal of hydrogen from a substance is also called oxidation.
Reduction:
1. The addition of hydrogen to a substance is called reaction.
2. The removal of oxygen from a substance is also called reduction.
From the above definitions, it is clear that the process of reduction is just opposite oxidation. Moreover, oxidation and reduction reactions occur together.
Explanation:
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