The solubility of KI is 50 g in 100 g of H₂O at 20 °C.If 110 grams of KI are added to 200 grams of H₂O,________. A)all of the KI will dissolve B)the solution will freeze C)the solution will start boiling D)a saturated solution will form E)the solution will be unsaturated

Question

Quizplus · Accepted Answer

The solubility of KI in H₂O is 50 g/100 g at 20 °C. This means that at this temperature, a saturated solution of KI in H₂O can hold only 50 g of KI in 100 g of solution. When 110 g of KI are added to 200 g of H₂O, the total mass of the solution becomes 310 g. To form a saturated solution, the solution can hold only 50% of KI in the total mass of the solution. Therefore, the maximum amount of KI that can dissolve in 310 g of H₂O is (50/100) x 310 = 155 g. Since the amount of KI added (110 g) is less than the maximum amount that can dissolve (155 g), a saturated solution will form. Therefore, the answer is D.

The Solubility of KI Is 50 G in 100 G