L1 /
3
CH1012
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)
