Question

Potassium and sodium chloride are similar in charge and they both have the same anion. When comparing sodium chloride (41 g / 100 mL at 100 ^oC) and potassium chloride, which has a higher solubility at 100 ^oC?

A. potassium chloride       B. This cannot be determined from the data collected here.        C. sodium chloride            D. They are both equally soluble.

Answer 1

molarity of NaCl   = W*1000/G.M.Wt* volume of solution ml

                             = 41*1000/58.5*100   = 7M

molarity of KCl   = W*1000/G.M.Wt* volume of solution ml

                           = 41*1000/74.5*100   = 5.5M

NaCl and KCl are strong electrolytes. at 100⁰c KCl is more soluble in water.

The temperature increases solubility of KCl is increases. But the solubility of NaCl is constant all temperatures.

A. potassium chloride >>>>>answer