(a) "No precipitation reaction can occur without exchange of ions between the two reactants." Justify this…
(a) "No precipitation reaction can occur without exchange of ions between the two reactants." Justify this statement giving a balanced chemical equation for the reaction.
Solution
(a)
Exchange of ions can take place only in a double displacement (precipitation) reaction where one of the products gets precipitated.
Reaction:
Na2SO4 (aq) + BaCl2 (aq) → BaSO4 (s) + 2NaCl(aq)
(precipitate)
(Or Any Other Reaction)