An aqueous solution contains the following ions: Cl-, K+, Mg{2+}, NO3{-}, SO4{2-}. Is a precipitate likely to form? If so, giv ethe formula of the precipitate.

A. MgSO4

B. MgCl2

C. K2SO4

D. No precipitate will form.

D. No precipitate will form.

You must recall the pertinent solubility rules:

Salts of Group 1 elements (K⁺) are soluble. Salts containing nitrate ion (NO₃⁻) are soluble. Salts containing chloride ion (Cl⁻) are generally soluble. Most sulfate (SO₄²⁻) salts are soluble.

The only ion not included in the list is Mg²⁺.

However, according to the rules, Mg (NO₃) ₂, MgCl₂, and MgSO₄ are soluble.

Thus, there is no precipitate.