Question

state weather a displacement reaction will occur if the following are mixed . Give reasons . Give the reaction
b) copper sulphate and iron
c) zinc sulphate and copper
d) zinc sulphate and iron
e) iron sulphate and zinc
f) iron sulphate and copper
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Answer 1

Answer:

b) Chemical reaction of iron nail with copper sulphate solution in water. Iron displaces copper ions from an aqueous solution of copper sulphate. It is a single displacement reaction of one metal by another metal. ... Fe (s) + Cu2 + (aq) —→ Fe2+ (aq) + Cu (s).

c). When zinc is added to copper sulphate (CUSO4) solution due to more reactivity of zinc, cooper is replaced by the zinc and forms zinc sulphate. During the process, the colour of the solution changes from blue to colourless.

d)When zinc is added to the solution of iron sulphate, the colour of iron sulphate solution changes. It is because zinc is more reactive than iron, therefore, it displaces iron from its solution of iron sulphate and a grey precipitate of iron and a colourless solution of zinc sulphate is formed.

e) same as answer d

f) Iron displaces copper ions from an aqueous solution of copper sulphate. ... Thus iron is more reactive than copper. In this reaction, metallic iron is converted into ferrous ion (Fe2+) and cupric ion (Cu2 +) is converted into metallic copper. Fe (s) + Cu2 + (aq) —→ Fe2+ (aq) + Cu (s).

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