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"An unsaturated solution is formed when 80 grams of salt is dissolved in 100 grams of water at 40° celsius. This salt could be... "
1. KNO3 2. KCL 3. NaNO3 4. NaCL
>>>I know the answer is NaNO3 however I do not know how to arrive at this answer. NaNO3 on the graph (Table G - Solubility Curves at Standard Pressure) is above the line which would make supersaturated. Why is this the answer?

Respuesta :

Answer:

3. NaNO3

Explanation:

Below the line on TABLE G in the reference tables at 40C

The answer is NaNO₃ because the solubility at 40 degree Celsius is much higher than 80 grams.

What is a saturated Solution ?

When we dissolve a solute in a particular solvent , consider water here, at a fixed temperature there is only a certain amount of solute that will be dissoluble in the solvent , adding excess will lead to precipitation, At this state of the solution, it is called as saturated solution.

The solubility curve is attached with the answer and we can see that the solubility of the NaNO₃ is 80 gm at 10 degree celsius as the temperature rises the solubility of the solvent is also rising and at 40 degree Celsius , more than 100 gm of solvent will be required to make a saturated solution.

Therefore , the answer is NaNO₃ because the solubility at 40 degree Celsius is much higher than 80 grams.

To know more about Saturated Solution

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