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प्रश्न
Explain the following type of chemical reaction, giving two examples for it:
Double displacement reaction
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उत्तर
A chemical reaction in which two compounds in their aqueous state exchange their ions to form new compounds is called a double decomposition reaction.
Examples:
- When barium chloride solution reacts with sodium sulphate solution, a white precipitate of barium sulphate and a soluble salt, sodium chloride, are obtained.
\[\ce{\underset{chloride]}{\underset{[barium]}{BaCl2_{(aq)}}} + \underset{[Sodium sulphate]}{Na2SO4_{(aq)}} -> \underset{[Barium sulphate]}{BaSO4 \downarrow} + \underset{[Sodium chloride]}{2NaCl_{(aq)}}}\] - Zinc oxide, a base, reacts with nitric acid to form a salt, zinc nitrate. and water.
\[\ce{\underset{[Zinc oxide]}{ZnO_{(s)}} + \underset{[Nitric acid]}{2HNO3_{(aq)}} + \underset{[Water]}{H2O}}\]
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संबंधित प्रश्न
What type of chemical reaction is represented by the following equation?
PQ + RS → PS + RQ
What is meant by double displacement reaction? Explain with help of one example.
Solutions of copper sulphate, iron sulphate and zinc sulphate are prepared and marked I, II and III respectively. Few pieces of aluminium are added to each solutions. After some time a change will be observe in
(A) I and II
(B) II and III
(C) III and I
(D) All the three
(i) What is observed when a solution of potassium iodide is added to a solution of lead nitrate taken in a test tube?
(ii) What type of reaction is this?
(iii) Write a balanced chemical equation to represent the above reaction.
If sodium chloride is added to the silver nitrate solution:
a. which precipitate is formed?
b. name the type of reaction.
c. write the chemical equation.
In a double displacement reaction such as the reaction between sodium sulphate solution and barium chloride solution:
- exchange of atoms takes place
- exchange of ions takes place
- a precipitate is produced
- an insoluble salt is produced
The correct option is:
Differentiate between displacement reaction and a neutralization reaction.
The following reaction is an example of:
\[\ce{4NH3_{(g)} + 5O2_{(g)} -> 4NO_{(g)} + 6H2O_{(g)}}\]
(i) displacement reaction
(ii) combination reaction
(iii) redox reaction
(iv) neutralisation reaction
Identify the product which represents the solid state in the above reaction.
Give an example of a double displacement reaction.
