Hydrogen is not obtained when zinc reacts with
(a) Cold water
(b) dil. HCl
(c) dil. H₂SO₄
(d) Hot NaOH (20%)
Answers
Answered by
5
Answer:
(a) Cold water
Explanation:
Zinc is a low reactive metal which does not react with cold water and hence no gas is evolved.
Zn + H₂O ⇒ No reaction.
However, Zn reacts with dil. HCl, dil. H₂SO₄ and Hot NaOH according to the following reactions
Zn + 2HCl ⇒ ZnCl₂ + H₂
Zn + H₂SO₄ ⇒ ZnSO₄ + H₂
Zn + 2NaOH ⇒ Na₂ZnO₂ + H₂
Answered by
0
Answer:
(a) Cold water
Explanation:
Zinc is a low reactive metal which does not react with cold water and hence no gas is evolved. However, Zn reacts with dil. HCl, dil. H2SO4 and hot NaOH solution.
Similar questions