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What happens when
(a) Dilute sulphuric acid is poured on a copper plate?
(b) Iron nails are placed in a copper sulphate solution?
Write word equations of the reactions involved.
(a) When dilute Sulphuric Acid is poured on a copper plate, no reaction takes place due to less reactivity of copper.
The equation can be given as:
Sulphuric acid (dil) + Copper → no reaction.
(b) When Iron nail is placed in a copper sulphate solution, iron sulphate and copper are obtained. In this reaction, Iron displaces copper from copper sulphate compound. The blue colour of copper sulphate solution turns green due to the formation of zinc sulphate.
This is a type of displacement reaction.
Iron + Copper sulphate → Iron sulphate + copper
[Extra information: Metals: Metals are elements that are malleable, ductile, and can conduct electricity. Examples: Sodium, Potassium, Copper, Aluminium, Mercury and sodium are metals.
Platinum, gold and silver are used to make jewellery because these are malleable and ductile. These are highly resistant to corrosion.
Sodium, potassium and lithium are very reactive and catch fire when exposed to air. This is due to their low ignition temperature and high reactivity.]
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