Advertisements
Advertisements
Question
What happens when a rod of zinc metal is dipped into a solution of copper sulphate? Give chemical equation of the reaction involved.
Advertisements
Solution
When a zinc rod is dipped in a solution of copper sulphate, zinc, being a more reactive metal than copper, will displace copper from copper sulphate solution. The blue colour of the copper sulphate solution gradually fades due to the formation of the green-coloured zinc sulphate. The red-brown colour of copper will be deposited on the zinc rod.
Zn(s) + CuSO4(aq) → ZnSO4(aq) + Cu(s)
APPEARS IN
RELATED QUESTIONS
Write equations for the reactions of iron with steam.
Samples of four metals A, B, C and D were taken and added to the following solution one by one. The results obtained have been tabulated as follows.
| Metal | Iron (II) sulphate | Cooper (II) sulphate | Zinc sulphate | Silver nitrate |
| A | No reaction | Displacement | ||
| B | Displacement | No reaction | ||
| C | No reaction | No reaction | No reaction | Displacement |
| D | No reaction | No reaction | No reaction | No reaction |
Use the Table above to answer the following questions about metals A, B, C and D.
- Which is the most reactive metal?
- What would you observe if B is added to a solution of copper (II) sulphate?
- Arrange the metals A, B, C and D in the order of decreasing reactivity.
Which gas is produced when dilute hydrochloric acid is added to a reactive metal?
What would you observe when zinc is added to a solution of iron (II) sulphate? Write the chemical reaction that takes place.
What type of oxides are formed when metals combine with oxygen? Explain with the help of an example.
What happens when magnesium reacts with very dilute nitric acid? Write an equation for the reaction involved.
Describe the reaction of potassium with water. Write the equation of the reaction involved.
Write one reaction in which aluminium oxide behaves as a basic oxide and another in which it behaves as an acidic oxide.
What is meant by the reactivity series of metals? Arrange the following metals in an increasing order of their reactivities towards water:
Zinc, Iron, Magnesium, Sodium
Name one metal which displaces silver from silver nitrate solution and one which does not.
The metals which can produce amphoteric oxides are:
(a) sodium and aluminium
(b) zinc and potassium
(c) calcium and sodium
(d) aluminium and zinc
Name a metal which does not react with cold as well as hot water but reacts with steam.
What is the cause of chemical bonding (or chemical combination) of atoms of elements?
Where does the metal aluminium, used in the thermit process, occurs in the reactivity series of metals?
Arrange the following metals in the increasing order of their reactivities:
Copper, Zinc, Aluminium, and Iron
Write the chemical equation for the following reaction:
Manganese dioxide is heated with aluminum powder.
Aluminium is used for making cooking utensils. Which of the following properties of aluminium are responsible for the same?
- Good thermal conductivity
- Good electrical conductivity
- Ductility
- High melting point
Generally, metals are solid in nature. Which one of the following metals is found in liquid state at room temperature?
The substance that will be flattened on beating with a hammer is ______.
Metals are generally hard. Which of the following metals is an exception and can be cut with a knife?
