Question

List 10 examples of double displacement reaction

Answer 1

Bacl2 +Na2SO4 = BaSO4 +2NaCl

PbNO3 + 2KI =2KNO3 + PbI2

NaHCaO3 + Ch3COOH = H2CO3 + NaCH2

Answer 2

Answer: A double displacement reaction is one in which exchange of ions take place. The salts which are soluble in water are designated by symbol (aq) and those which are insoluble in water and remain in solid form are represented by (s) after their chemical formulas.

a) $2NaOH(aq)+(NH_4)_2SO_4(aq)\rightarrow 2NH_4OH(aq)+Na_2SO_4(aq)$

b) $(Nb)2(SO_4)_5(aq)+Ba(NO_3)_2(aq)\rightarrow Nb(NO_3)_2(aq)+BaSO_4(s)$

c) $Sr(Br)_2(aq)+2AgNO_3(aq)\rightarrow Sr(NO_3)_2(aq)+2AgBr(s)$

d) $Ba(OH)_2+H_2SO_4\rightarrow BaSO_4+2H_2O$

e) $Na_3PO4+3KOH\rightarrow 3NaOH+K_3PO_4$

f) $BaCl_2+Al_2(SO_4)_3\rightarrow 2AlCl_3+3BaSO_4$

g) $Pb(NO_3)_2+H_2SO_4\rightarrow PbSO_4+HNO_3$

h) $BaSO_4(aq)+NaCl(aq)\rightarrow Na_2SO_4(aq)+BaCl_2(s)$

i) $HCN+LiOH\rightarrow LiCN+H_2O$

j) $Na_2SO_4+BaCl_2\rightarow BaSO_4+2NaCl$