Aqueous copper sulphate solution (blue ) gives
(i) a green precipitate with aqueous potaassium fluoride.
(ii) a bright green solution with aqueous potassium chloride . Explain these experimental results.

Explanation

Aquous copper sulphate (blue ) is ` [Cu(H_2O)_4]^(2+) +SO_4^(-) `
` [Cu(H_2O)_4 ]^(2+) ` is a lible complex in which ` H_2O` ligand get easily replaced by ` F^(-) ` ions of KF and by ` Cl^(-) ` ions of KCI
(i) ` [Cu(H_2O)_4]^(2+) _(aq) +4Cl ^(-) _(aq) to [CuCl_4]^(2-)+ 4H_2O ` Bright green ppt