question_answer

  Write word equations and then balanced equations for the reactions 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. (e) a solution of sodium hydrogen carbonate is heated.            [NCERT]

Answer:

               (a) Sulphuric acid (aq) + Zinc(s) ® Zinc sulphate (aq) + Hydrogen(g) H2SO4(aq) + Zn(s) ® ZnSO4(aq) + H2(g) (b) Hydrochloric add(aq) + Magnesium(s)  Magnesium chloride(aq) + Hydrogen(g) 2HCl(aq) + Mg(s) ® MgCl2(aq) + H2(g) (c) Sulphuric acid(aq) + Aluminium(s)  Aluminium sulphate(aq) + Hydrogen(g) 3H2SO4(aq) + 2Al(s) ® Al2(SO4)3(aq) + 3H2(g) (d) Hydrochloric acid(aq) + Iron(s) ® Iron chloride(aq) + Hydrogen(g) 2HCl(aq) + Fe(s)  FeCl 2 (aq) + H2(g) (e)Sodium hydrogen carbonate (aq) Sodium carbonate(s) + Carbon dioxide (g) + Water(l)