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प्रश्न
State the change in colour observed in following case mentioning the reason:
A piece of zinc is dipped in ferrous sulphate solution.
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उत्तर
The colour of iron sulphate solution changes when zinc is added to iron (II) sulphate solution. Because zinc is more reactive than iron, it displaces iron from its solution of iron sulphate, resulting in the formation of an iron precipitate that is grey in colour and a colourless solution of zinc sulphate.
\[\ce{Zn + FeSO4->ZnSO4 + Fe}\]
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संबंधित प्रश्न
CuSO4(aq) + Zn(s) → ZnSO4(aq) + Cu(s) is an example of a decomposition reaction.
What type of chemical reaction is represented by the following equation?
\[\ce{A + BC -> AC + B}\]
What type of chemical reaction is represented by the following equation?
\[\ce{A2O3 + 2B -> B2O3 + 2A}\]
What type of reaction is represented by the following equation?
\[\ce{Mg + CuSO4 -> MgSO4 + Cu}\]
What is meant by a displacement reaction? Explain with the help of one example.
A strip of metal X is dipped in a blue coloured salt solution YSO4. After some time, a layer of metal Y from the salt solution is formed on the surface of metal strip X. Metal X is used in galvanisation whereas metal Y is used in making electric wires. Metal X and metal Y together form an alloy Z.
- What could metal X be?
- What could metal Y be?
- Name the metal salt YSO4.
- What type of chemical reaction takes place when metal X reacts with salt solution YSO4? Write the equation of the chemical reaction involved.
- Name the alloy Z.
Classify the following reaction as combination, decomposition, displacement, precipitation and neutralization. Also balance the equation.
\[\ce{AgNO3_{(aq)} + NaCl_{(aq)}-> AgCl_{(s)} + NaNO3}\]
Select the correct answer for the statement given below:
The displaced product of the displacement reaction of sodium with cold water.
Which of the following is a displacement reaction?
Identify the type of chemical reaction given below:
\[\ce{CuSO4 + Fe -> FeSO4 + Cu}\]
