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How to find solubility of a solution? So i have to calculate the solubility of a

ID: 734969 • Letter: H

Question

How to find solubility of a solution?
So i have to calculate the solubility of a salt NaCl (sodium chloride).
The mass of the salt = 5g
volume of water: 34 mL
Temperature= 18 degree Celsius
density 1.1 g/ml

please explain how to find the solubility of the salt in g solute per 100g of water

and then how to calculate the solubility in morality.

i google, youtube and couldn't find a more understanding way. it just confused me more !! its so frustrating!
if anyone has an easier way to explain PLEASE DO!

thank you!

Explanation / Answer

The solubility of a substance is the amount of that substance that will dissolve in a given amount of solvent. Solubility is a quantitative term. Solubilities very enormously (recall Table 8.2). The terms soluble and insoluble are relative. A substance is said to be soluble if more than 0.1 g of that substance dissolves in 100 mL solvent. If less than 0.1 g dissolves in 100 mL solvent, the substance is said to be insoluble or, more exactly, sparingly soluble. The terms miscible and immiscible may be encountered when considering the solubility of one liquid in another. Miscible means soluble without limits; for example, alcohol is miscible with water Immiscible and insoluble mean the same; oil is immiscible with water, as in oil and vinegar salad dressing Determining Solubility How is the solubility of a substance determined? A known amount of the solvent--for example, 100 mL--is put in a container. Then the substance whose solubility is to be determined is added until, even after vigorous and prolonged stirring, some of that substance does not dissolve. Such a solution is said to be saturated because it contains as much solute as possible at that temperature. In this saturated solution, the amount of solute is the solubility of that substance at that temperature in that solvent. Doing this experiment with water as the solvent and sodium chloride as the solute, we find that, at 20°C, 35.7 g of the salt dissolve in 100 mL water. The solubility of sodium chloride is, then, 35.7 g/100 mL water at 20°C. Sodium chloride is a moderately soluble salt. The solubility of sodium nitrate is 92.1 g/100 mL water at 20°C; sodium nitrate is a very soluble salt. At the opposite end of the scale is barium sulfate, which has a solubility of 2.3 X 10 -4 g/100 mL water at 20°C. Barium sulfate is an insoluble salt. See Table 8.2 for the solubility of other compounds and Table 8.3 for the rules predicting the solubility of ionic compounds.

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