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Write a long answer to the following questions:
You are provided with two containers made up of copper and aluminium. You are also provided with solutions of dilute HCl, dilute HNO_3, ZnCl_2 and H_2O. In which of the above containers these solutions can be kept?
When keeping solutions in a copper container:
Dilute HCl: With dilute HCl, copper . As a result, dilute HCl may be kept in a copper container.
Dilute HNO_3: When copper reacts with dilute HNO_3, copper nitrate and nitrogen monoxide gas are formed.
3Cu + 8HNO_3 → + 2NO + 4H_2O
Therefore, dilute HNO_3 cannot be kept in a copper container.
ZnCl_2 solution: Copper does not displace zinc from ZnCl_2 solution because it is than Zn.
Hence, ZnCl_2 solution can be stored in a copper container.
H_2O Water: Copper and water do not react. As a result, water may be kept in a copper container.
A copper container can be used to store diluted HCl, ZnCl_2 solution, and H_2O.
When keeping solutions in a aluminium container:
Dilute HCl: When aluminium reacts with dilute HCl, it forms aluminium chloride and hydrogen gas.
2Al + 6HCl →
As a result, dilute HCl cannot be kept in an aluminium container.
Dilute HNO_3: Aluminium forms aluminium oxide when it reacts with dilute HNO_3. The aluminium oxide layer any further after it has formed. Hence, dilute HNO_3 can be stored in an aluminium container.
ZnCl_2 solution: ZnCl_2 solution combines with Al and forms aluminium chloride and zinc Zn metal.
3ZnCl_2 + 2Al →
Therefore, ZnCl_2 solution cannot be stored in aluminum container.
H_2O Water: Aluminum and water (cold as well as hot water) do not react.
Therefore, water can be stored in aluminium container.
Dilute HNO_3 and H_2O can be stored in an aluminium container.