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What is the difference between displacement and double displacement reactions? Write equations for these reactions.
Answer :
Displacement reaction:
Double Displacement reaction:
Displacement reaction
$$ Mg(s) + 2HCl(aq) \rightarrow MgCl_{2} + H_{2}(g) $$
Double Displacement reaction
$$ \;\;\; 2KBr(aq) + BaCl_{2} $$
$$ \downarrow$$
$$ \;\;\; 2KCl(aq) + BaBr_{2}$$