Guide Question:
1. What is the difference between the Unsaturated and saturated solutions?
2. How do you know a solution is saturated?
3. What happens when a solution becomes saturated?
4. How many grams or teaspoons of sugar dissolved in 20 ml of water to form saturated solution?
Answers & Comments
Answer:
1. A saturated solution is a solution that contains the maximum amount of solute that is capable of being dissolved. ... An unsaturated solution is a solution that contains less than the maximum amount of solute that is capable of being dissolved.
2. If more solute is added and it does not dissolve, then the original solution was saturated. If the added solute dissolves, then the original solution was unsaturated
3.When the solution equilibrium point is reached and no more solute will dissolve, the solution is said to be saturated. A saturated solution is a solution that contains the maximum amount of solute that is capable of being dissolved. At 20°C, the maximum amount of NaCl that will dissolve in 100.
4. The Solubility of sugar in water at room temperature is 200 grams/ 100 m l of water. Anything more than it will make the solution saturated.
For a 20 m l solution given the above solubility of water:
(200 grams / 100 m l) = x / 20m l
In order to find the equivalent soluble sugar for a 20 m l water we equated the given amount of solvent.
Thus;
for a 20m l water, the maximum amount of sugar it can dissolve is 40 grams
1 teaspoon of sugar is equivalent to four grams.
Hence,
X 40 grams = 10 teaspoons of sugar
Therefore, in order to make 20 m l of water a saturated sugar solution, we need more than 10 teaspoons of sugar.