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Therankingof the given solutions from most conductive to least conductive is:1.0 M NaCl.1.2 M KCl.1.0 M Na₂SO₄.0.75 M LiCl.The ability of a solution to conduct electricitydepends on theconcentrationandmobilityof ions in the solution. The higher the concentration of ions and the greater their mobility, the more conductive the solution will be.1.0 M NaCl - NaCl dissociates into Na⁺ and Cl⁻ ions in solution, both of which have high mobility and high concentration in a 1.0 M solution.1.2 M KCl - KCl dissociates into K⁺ and Cl⁻ ions in solution, which have high mobility, but the concentration of ions is slightly lower than in the 1.0 M NaCl solution.1.0 M Na₂SO₄ - Na₂SO₄ dissociates into 2 Na⁺ ions and 1 SO₄ 2- ion in solution. Although the concentration of ions is higher than in the 0.75 M LiCl solution, the mobility of the larger SO₄ 2- ion is lower, making the solution less conductive overall.0.75 M LiCl - LiCl dissociates into Li+ and Cl- ions in solution, but the concentration of ions is lower than in the other solutions. Additionally, Li+ ion is smaller than Na⁺ and K⁺ ions, which reduces its mobility and overall conductivity.Learn more aboution:brainly.com/question/29183072#SPJ11...