Q19 of 21 Page 6

Can Copper displace hydrogen from acids & water?

No, copper cannot displace hydrogen from acids and water. This is because, all the metal which lie below the position of “hydrogen” in the reactivity series, are less reactive than hydrogen, hence, these metals cannot displace hydrogen from acids & water.


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16

What will happen if a less reactive metal reatcs with a salt of higher reactive metal?

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Why do we need to clean the metals with sandpaper prior to the experiment?

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i. Cu + Al2(SO4)3 ⇒


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iii. Zn + FeSO4⇒

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Complete the reaction & give reason:
Zn + H2O →