NCERT Solution for Class Tenth Science Chapter 2
Acids, Bases and Salts
Exercises Questions
Page No-18
Questions No-5
(a) dilute sulphuric acid reacts with zinc granules.
(b) dilute hydrochloric acid reacts with magnesium ribbon.
(c) dilute sulphuric acid reacts with aluminium powder.
(d) dilute hydrochloric acid reacts with iron filings.
(a) when sulphuric acid reacts with zinc granules, the product formed is zinc sulphate and hydrogen gas.
H2SO4 + Zn → ZnSO4 + H2
Sulphuric acid + Zinc → Zinc sulphate + Hydrogen
(b) when dilute hydrochloric acid reacts with magnesium it gives magnesium chloride and hydrogen gas evolved.
2HCl + Mg → MgCl2 + H2
Hydrochloric acid + Magnesium → Magnesium chloride + Hydrogen
(c) when sulphuric acid reacts with aluminium it gives aluminium sulphate and hydrogen gas evolve.
3H2SO4 + 2Al → Al2(SO4)3 + 3H2
Sulphuric acid + Aluminium → Aluminium sulphate + Hydrogen
(d) when iron metal reacts with hydrochloric acid it forms ferric chloride and hydrogen gas.
2HCl + Fe → FeCl2 + H2
Hydrochloric acid + Iron → Ferric chloride + Hydrogen