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प्रश्न
When hydrogen sulphide gas is passed through a blue solution of copper sulphate, a black precipitate of copper sulphide is obtained and the sulphuric acid so formed remains in the solution. The reaction is an example of a:
विकल्प
Combination reaction
Displacement reaction
Decomposition reaction
Double displacement reaction
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उत्तर
Double displacement reaction
Explanation:
In the case of a double displacement reaction, two reactants exchange their ions and form new products.
\[\ce{\underset{\text{Hydrogen sulphide}}{H2S(g)}+\underset{\text{Copper sulphate}}{CuSO4(aq)}->\underset{\text{Copper sulphide,black ppt}}{CuS(s)}+\underset{\text{Sulphuric acid}}{H2SO4(aq)}}\]
This reaction is an example of a double displacement reaction.
Hence, the correct answer is Double displacement reaction.
संबंधित प्रश्न
Write the balanced chemical equation for the following and identify the type of reaction.
\[\ce{Potassium bromide (aq) + Barium iodide (aq) -> Potassium iodide (aq) + Barium bromide (s)}\]
What is meant by double displacement reaction? Explain with help of one example.
Explain the following type of chemical reaction, giving two examples for it:
Double displacement reaction
Identify the type of reaction taking place in the following case and write the balanced chemical equation for the reaction.
Potassium iodide reacts with lead nitrate to produce potassium nitrate and lead iodide.
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
Which option denotes a double displacement reaction?
Which among the following is (are) double displacement reaction(s)?
(i) \[\ce{Pb + CuCl -> PbCl2 + Cu}\]
(ii) \[\ce{Na2SO4 + BaCl2 -> BaSO4 + 2NaCl}\]
(iii) \[\ce{C + O2 -> CO2}\]
(iv) \[\ce{CH4 + 2O2 -> CO2 + 2H2O}\]
In a double displacement reaction ______.
A chemical reaction in which exchange of ions occurs between the reactants is known as ______.
Give scientific reason.
While preparing dilute sulphuric acid from concentrated sulphuric acid in the laboratory, the concentrated sulphuric acid is added slowly to water with constant stirring.
