Identify the reaction from the following in which a white coloured precipitate is formed (1) C6H12O6 + 6O2 -------> 6CO2 + 6H2O
(2) Na2SO4 + BaCI2 -------> BaSO4 + 2NaCI (3) Pb + CuCI2 -------> PbCI2 + Cu
(4) 2KI + Pb(NO3 ) 2 ------- ► 2KNO3 + Pbl2
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2. Na2SO4 +BaCl2-----BaSO4+NaCl
a precipitate of BaSO4 is formed .
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