A silver grey coloured rod is placed in a blue solution. The blue colour of the solution fades away
gradually and after a few days, the rod appears etched. Answer the following
(a) Name the silver-grey material of the rod.
(b) Name and write the formula of the substance present in blue solution,
(c) Write the chemical equation for the reaction involved,
What is the type of reaction?
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e, copper oxid
Answers
Answer:
a) The silvery grey material is Silver.
b) The substance present in blue solution is Copper Sulphate.
c)CuSo4 + Ag -> AgSo4 + Cu
Answers are as follows -
(a) Name the silver-grey material of the rod.
The silver-grey material of the rod is Iron.
(b) Name and write the formula of the substance present in the blue solution.
The name of the substance is copper sulfate. The chemical formula of copper sulfate is CuSO4. In this chemical formula, Cu represents copper, S represents sulfur and O represents oxygen.
(c) Write the chemical equation for the reaction involved. What is the type of reaction?
The chemical reaction of iron and copper sulfate is as follows -
Fe + CuSO4 --> Fe(SO4)2 + Cu²+
On the reactant side, Fe represents iron, and CuSO4 represents copper sulfate. On the product side, Fe(SO4)2 represents iron sulfate and Cu²+ is copper ions.
In this reaction, only copper is replaced from the solution by iron ions. Thus, the reaction is a single displacement reaction.
Feasibility of reaction is possible due to the placement of iron above copper in the reactivity series. This indicates the reactive nature of iron, which displaces copper.
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