From The Following Anions Br Co3 2 Cl I No3 No2 Po4 3 So4 2 So3 2 A W

From the following anions: Br-, CO3^-2, Cl-, I-, NO3^-, NO2^-, PO4^-3, SO4^-2, SO3^-2a)which anion gives a precipitate with Ag+ ion?b) which anion is involved in an oxidation-reduction reation as a part of a confirmatory reaction?c) which anion gives precipitate with Ba+2 ion?d)which anion evolves a gas when acid is added?e) which anion releases an odorous gas as a product?