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Question
Hydrogen is obtained by displacement from:
- dilute sulphuric acid
- dilute hydrochloric acid
Write equations using zinc and iron.
Why does copper not show similar behavior?
Solution
- Zn + H2SO4 → ZnSO4 + H2
- Fe + H2SO4 → FeSO4 + H2
Hydrogen cannot be prepared from metals which are below it in the activity series of metals such as copper because only metals that are more reactive than hydrogen can displace it from acids.
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