What happens when (i) magnesium is burnt in air (ii) quick lime is heated with silica (iii) chlorine reacts with slaked lime (iv) calcium nitrate is heated ?

What happens when (i) magnesium is burnt in air (ii) quick lime is hea

1.	What happens when (i) magnesium is burnt in air (ii) quick lime is heated with silica (iii) chlorine reacts with slaked lime (iv) calcium nitrate is heated ?
Answer» Solution :(i) `2 Mg (s) + O_(2) (g) overset(Delta)(to) 2 MgO(s)and 2 Mg(s) +N_(2) (g) overset(Delta)(to) UNDERSET("Mag. Nitride")(Mg_(3) N_(2)(s))` (ii) `underset("Quick lime")(CaO(s)) + underset("Silica")(SiO_(2)) (s) overset(Delta)(to) underset("Calcium silicate") (CaSiO_(3) (s))` (iii) It reacts with `Cl_(2)` to form calcium hypochlorite , `Ca(OCL)_(2)-a` constituent of bleaching powder `underset("Slaked lime")(2 Ca(OH)_(2)) + 2 Cl_(2) to ubrace(CaCl_(2) + Ca(OCl)_2)_("Bleaching power") + 2H_(2)O` (iv) `2 Ca(NO_(3))_(2) (s) overset(Delta) (to) 2 CaO(s) + 4 NO_(2) (g) + O_(2) (g)`