00:01
Good day, the topic is about solubility.
00:03
Solubility depends on temperature as well as the nature of the solute.
00:07
We wish to explain how come that a super saturated solution containing solid solutes can be made from cooling a saturated solution, whereas a super saturated solution containing gaseous solute would be prepared by heating a saturated solution.
00:26
Let us take note that the solubility of gas and solid are affected by temperature such that the solubility of solid increases with temperature, whereas that of gas decreases.
00:39
Now, a super saturated solution contains more solute than it can hold.
00:44
To form this, with solid solute, we cool a saturated solution because in cooling, the amount of solid that the solution can dissolve decreases.
00:54
However, the solid do not necessarily crystallizes out of the solution, and they remain dissolved.
01:00
Hence, the solution contains more solute that it can hold.
01:05
Now for gases, increasing the temperature causes the liquid to hold less gas...