Question

What is double displacement reaction ?

Answer 1

A double-replacement reaction is a reaction in which the positive and negative ions of two ionic compounds exchange places to form two new compounds. The general form of a double-replacement (also called double-displacement) reaction is: AB+CD→AD+CB

Answer 2

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Double displacement reactions generally take place in aqueous solutions in which the ions precipitate and there is an exchange of ions.

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Some of the examples of double displacement reaction are as follows :-

• Pb(NO3)2 (aq) + 2NaCl (aq) ⇌ 2NaNO3 (aq) + PbCl2 (s)

lєαd (íí) nítrαtє rєαcts wíth thє sαlt sσdíum chlσrídє tσ prσducє sσdíum nítrαtє αnd lєαd (íí) chlσrídє.

• AgNO3 (aq) + HCl (g) ⇌ AgCl (s) + HNO3 (aq)

αquєσus sílvєr nítrαtє rєαcts wíth hчdrσchlσríc αcíd tσ prσducє α sσlíd prєcípítαtє σf sílvєr chlσrídє αnd αquєσus nítríc αcíd.

• H2SO4 (aq) + 2LiOH (aq) ⇌ Li2SO4 (aq) + 2H2O (l)

αquєσus sulphuríc αcíd rєαcts wíth líthíum hчdrσхídє tσ prσducє líthíum sulphαtє αnd wαtєr.

✿_SɪᴛᴀVᴇʀᴏɴɪᴄᴀ_✿