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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- What change in the colour of iron nails and copper sulphate solution you observe after keeping the iron nails dipped in copper sulphate solution for about 30 minutes.
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- What changes in the colour of iron nails and copper sulphate solution do you observe after keeping the iron nails dipped in copper sulphate solution for about 30 minutes?
- What happens when a piece of(a) zinc metal is added to copper sulphate solution?(b) aluminium metal is added to dilute hydrochloric acid?(c) silver metal is added to copper sulphate solution?Also, write the balanced chemical equation if the reaction occurs.
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- What would you observe when a strip of zinc is placed in copper sulphate solution? Write a word equation of the reaction which takes place.
- What happens when a zinc strip is dipped into a copper sulphate solution?(a) Write the equation for the reaction that takes place.(b) Name the type of reaction involved.
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