What happens when zinc granules are treated with dilute solution of H₂SO₄, HCl, HNO₃ , NaCl and NaOH, also write the chemical equations if reaction occurs.

Question

What happens when zinc granules are treated with dilute solution of H 2 SO 4 , HCl, HNO 3 , NaCl and NaOH, also write the chemical equations if reaction occurs.

Philoid · Accepted Answer

In the case of the reaction of zinc granules with Sulphuric acid or Hydrochloric acid, a salt is formed - Zinc sulphate or Zinc Chloride respectively - and the Hydrogen gas is released.
Zn + H₂SO₄→ ZnSO₄ + H₂↑
Zn + 2HCl → ZnCl₂ + H₂↑
Similarly, Hydrogen gas and Zinc Nitrate is formed when the Zinc granules are treated with HNO₃ .
Zn + 2HNO₃ → Zn(NO₃ )₂ + H₂↑

In the case of NaCl, Zinc being less reactive than Sodium, no reaction occurs.
When zinc is made to react with NaOH, it forms Sodium zincate and hydrogen gas.
Zn + 2H₂O + 2NaOH ⇨ Na₂Zn(OH)₄ + H₂↑

What happens when zinc granules are treated with dilute solution of H2SO4, HCl, HNO3 , NaCl and NaOH, also write the chemical equations if reaction occurs.

What happens when zinc granules are treated with dilute solution of H₂SO₄, HCl, HNO₃ , NaCl and NaOH, also write the chemical equations if reaction occurs.