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Question
What happens when
(a) Dilute sulphuric acid is poured on a copper plate?
Write word equations of the reactions involved.
(b) Iron nails are placed in copper sulphate solution?
Write word equations of the reactions involved.
(a) Dilute sulphuric acid is poured on a copper plate?
Write word equations of the reactions involved.
(b) Iron nails are placed in copper sulphate solution?
Write word equations of the reactions involved.
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Solution
(a)
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Copper is less reactive than hydrogen.
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So, it does not react with dilute sulphuric acid even on heating.
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Hence, no reaction occurs when dilute sulphuric acid is poured on a copper plate.
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While, copper reacts with concentrated sulphuric acid giving hydrogen gas and blue coloured copper salt crystals.
(b)
- Since, iron is more reactive than copper.
- So, iron displaces copper from copper sulphate solution.
- Therefore, when iron nails are placed in copper sulphate solution a colour change from blue to light green
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Copper is less reactive than hydrogen.
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So, it does not react with dilute sulphuric acid even on heating.
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Hence, no reaction occurs when dilute sulphuric acid is poured on a copper plate.
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While, copper reacts with concentrated sulphuric acid giving hydrogen gas and blue coloured copper salt crystals.
(b)
- Since, iron is more reactive than copper.
- So, iron displaces copper from copper sulphate solution.
- Therefore, when iron nails are placed in copper sulphate solution a colour change from blue to light green
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