conductivity = k. no of ions in solution NaI = Na+ + I- = 2 species K2SO4 = 2K+ + SO42- = 3 species conductivity 0.015 M K2SO4 = 3 x 12000 /2 = 18,000 units Solution conductivity = k. no of ions in solution NaI = Na+ + I- = 2 species K2SO4 = 2K+ + SO42- = 3 species conductivity 0.015 M K2SO4 = 3 x 12000 /2 = 18,000 units.