Double Displacement Reaction

 

 

 A double displacement reaction is a type of reaction where part of of one reactantis replaced by part of another reactant

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Double displacement reactions take the form
AB + CD → AD + CB

Examples: The reaction

AgNO₃ + NaCl → AgCl + NaNO₃

is a double displacement reaction. The silver traded its nitrite ion for the sodium's chloride ion

.Double displacement reactions are driven by some force: either the formation of a gas, formation of a precipitate, or formation of water

FORMATION OF A GAS

Na₂CO_3(aq) + 2HCl_(aq)→ 2NaCl_(aq) + H₂CO_3(aq

breaks down to H₂O_(l) + CO_2(g

_{FORMATION OF A PRECIPITATE}

MgCl_2(aq) + Ca(OH)_2(aq) → Mg(OH)_2(s) + CaCl_2(aq

REACTIONS THAT PRODUCE WATER

HNO_3(aq) + KOH_(aq) → KNO_3(aq) + H₂O