CH1012
L1 /
‹#›
L1 /
3
METATHESIS REACTIONS
(i) Formation of a
precipitate
BaCl2(aq) + Na2CO3(aq) ® BaCO3(s) + 2NaCl(aq)
BaCl2(aq) + Na2CO3(aq) ® BaCO3(s) + 2NaCl(aq)
(ii) Formation of a
weak electrolyte
Mg(OH)2(s) + 2 H+(aq) ® Mg2+(aq) + 2 H2O
Mg(OH)2(s) + 2 H+(aq) ® Mg2+(aq) + 2 H2O
(iii) Formation of a
gas
2 H+(aq) + S2-(aq) ® H2S(g)
2 H+(aq) + S2-(aq) ® H2S(g)
Remember : elements in close proximity on
the RHS of periodic table bond covalently whereas those from opposite ends bond ionically (very different IE1 and EA1 values)
the RHS of periodic table bond covalently whereas those from opposite ends bond ionically (very different IE1 and EA1 values)
