Question 5
Write word equations and then balanced equations for the reaction taking place when -
(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) Zinc + Sulphuric acid (dilute) ⟶ Zinc sulphate + Hydrogen gas
Zn (s) + H2SO4 (dil.) ⟶ ZnSO4 (aq) + H2 (g)
(b) Magnesium + Hydrochloric acid (dilute) ⟶ Magnesium chloride + Hydrogen gas
Mg (s) + 2HCl (dil.) ⟶ MgCl2 (aq) + H2 (g)
(c) Aluminium + Sulphuric acid (dilute) ⟶ Aluminium sulphate + Hydrogen gas
2Al + 3H2SO4 (dil.) ⟶ Al2(SO4)3 (aq) + 3H2 (g)
(d) Iron + Hydrochloric acid (dilute) ⟶ Iron chloride + Hydrogen
Fe (s) + 2HCl (dil.) ⟶ FeCl2 (aq) + H2 (g)