Question

Name the type of following reaction.
(a) Na2SO4 + BaCl2  BaSO4 + 2NaCl
(b) Pb + CuCl2  PbCl2 + Cu
(c) MnO2 + 4HCl  MnCl2 + 2H2O + Cl2
(d) CaO + H2O  Ca(OH)2
(e) 2Pb(NO3)2  2PbO + 4NO2 + O2

Answer 1

Answer:

Double displacement reactions are those in which ions of the reactants are exchanged to form new compounds as products.

In option (ii),

Na

+

ion combines with Cl

−

ion and SO

4

2−

ion combines with Ba

2+

ion to form two new compounds as sodium chloride (NaCl) and barium sulphate (BaSO

4

) respectively

Explanation:

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Answer 2

A) is the correct answer.

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