How will you prepare saturated solution of pottassium nitrate at 30 degrees Celsius

Dear Student,

A saturated solution is a solution in which no more solute can be dissolve at given temperature. The addition of any more solute will result in the accumulation of that solute in the bottom of the container. 
To prepare the saturated solution of KNO​3 at 30°C, take a measured volume of water (say 100 ml.) in beaker and warm it up to 30°C​. Then add KNO​3 pinch by pinch at constant stirring and observe the point when no more KNO​3 is dissolving in water. At that point the added pinch of KNO​3 will appear at the bottom of beaker and your saturated solution is prepared.
On cooling, crystals(particles) of KNO​3 separate from the solution. This is a separation technique is known as crystallisation.  

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A saturated solution is one that contains the maximum possible quantity of solute. To make a solution like this is pretty simple:

1) Get a bunch of solvent.

2) Dump in a ridiculous amount of solute and stir.

3) Continue #2 until there's still a big bunch of solute at the bottom of the container. The solution that's on top of the solute is saturated.

Saturated solutions are easy to make because you don't need precise amounts of anything. As long as you see some of the solute sitting at the bottom, you know that it wasn't able to dissolve and that you have a saturated solution.

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