Q.

Lead sulphate is soluble in ammonium acetate solution due to the formation of

1 Ammonium tetraacetoplumbate (II)  
2 Ammonium hexaacetoplumbate (II)  
3 Ammonium tetrahydroxyplumbate (II)  
4 Ammonium hexahydroxyplumbate (II)  

Ans.

(1)

PbSO44CH3COONH4[Pb(CH3COO)4]-2