Question

Instructions: Use the following image to answer the following questions.

1. A solution contains 40 g of NaCl per 100 g of water at 100˚C. Is the solution unsaturated, saturated or supersaturated?
2. 
   NaNO Caci KNO3 K. Grzor Solubility (g of salt in 100 g H,0) Pb(NO3)2 Koi КСІОз 0 Ce2(SO) 10 20 30 40 50 60 70 80 90 100 Temperature (°C)
   A solution contains 50 g of KCl per 100 g of water at 25˚C. Is the solution unsaturated, saturated or supersaturated?
3. A solution contains 10 g of KNO3 per 100 g of water at 30˚C. Is the solution unsaturated, saturated or supersaturated?
4. An 8 oz bottle of Dr. Pepper made with imperial cane sugar (C12H22O11) contains 27 g of sugar in 236.6 mL of water. What is the molarity of the solution with respect to cane sugar?
5. Calculate the mass of NaCl in a 55 mL sample of a 3.5 M saline solution.
6. What volume of water should be added to 2.6 g of KCl to make a 4 M solution?

Answer 1

from the given image it is clear that when the solute Point will be below the solute line then the solution will be unsaturated. . Point below the solution line unsaturated » above » 1 2 → Super saturalist Point on » > Saturated . 40g Nad per 100 g water at 100°c saturated Solution 27 sogkel Res 100g water at 25c super saturatis Solution 37 10g KNO3 per 100g water at 30% unsaturated Solution. & mass of the cane suger = 27g. Molar mass of cane suger=342.2965 g molt Number of moles of cane suger taken 278 342 2965qmol = 0.07887 mol. 236.6 me Solution contain 0.07 887 mil cane suyer. 10000 m2 0.07 887 X 1000 mol » 236.6 Molarity of the - 0.333 maj. solution = 0.333 (M).

strength of the Nace solution - 3.5M. . 1000 mL solution Contains 3.5mor Nach 55 m2 3.5 mol x 35 ml 10oom 1 mol - O-1925 mal.Nall Nad - 58.44 g Nace . 0.1925 mol Nach = 58.4ug x 0.1925 ml 1 mol = 11: 2497 g Nach : Mass of Nad in 55ml sample of 3. 5M = 11.24979 Molar mass of kel= 74.55gmoln . 74.55 g xe = 1 molkel 2.6g kel = 2.68 x 1 mol 74.55g - 0.034 8 mol kce . in The solution 4 mot kce should be &M should be present in 1000 ms solution 0.034 8 mol as in " 1000 mx 0.0348 mol 4 mot - 8.72 mL 8.72 m2 water required to make 4M ked solution.