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You need to become an AUS-e-TUTE Member! Solubility Table (g/100 mL or g/100 g) Chemistry TutorialKey Concepts
(i) nature of the solute ((intermolecular forces)
Solubility Table (Table of Solubilities)Water is a commonly used solvent, so it is very useful to construct a table of solubilities based on the mass of a solute that will dissolve in a given volume of water.
Solubility tables (tables of solubility) usually tabulate the maximum mass in grams of the solute that can be dissolved in 100 mL of water. This data in the table is relevant only to the temperature given for the table. Commonly, solubility data is given for 25°C.
A solute is usually considered to be soluble in water if more than 1.0 g can be dissolved in 100 mL of water. A solute is usually considered to be insoluble in water if less than 0.1 g can be dissolved in 100
mL of water. It is important to note that "insoluble" does NOT necessarily mean that the solute cannot be dissolved, it only means that an extremely small amount of the solute can be dissolved in the solvent. A solute is usually considered to be slightly soluble, or sparingly soluble, in water if between 0.1 and 1.0 g can be dissolved in 100 mL of water. The solubility table below gives the maximum mass of solute in grams that can be dissolved in 100 mL of water at 25°C.
Sodium chloride, NaCl, is a soluble salt. From the solubility table above we see that the solubility of sodium chloride is 36 g/100 mL water at 25°C.
Worked Example 1 (using the StoPGoPS approach to problem solving)Question 1: A student has been given 250 mL of water at 25°C and needs to add enough calcium hydroxide to make a saturated solution. Response: What is the question asking you to do?
What information have you been given in the question?
What is the relationship between what you have been given and what you need to find out?
Perform the calculation
Is your answer plausible?
State your solution to the problem.
Worked Example 2 (using the StoPGoPS approach to problem solving)Question 2: A student adds 0.01 g of solid iodine to 20 mL of water at 25°C. Response: What is the question asking you to do?
What information have you been given in the question?
What is the relationship between what you have been given and what you need to find out?
Step 1: Calculate mass of iodine that dissolves
Step 2: Calculate mass of iodine that does not dissolve
Is your answer plausible?
State your solution to the problem.
Which of the following is soluble in water salt?Table salt is chemically sodium chloride (NaCl) which is easily soluble in water.
Why common salt is soluble in water?At the molecular level, salt dissolves in water due to electrical charges and due to the fact that both water and salt compounds are polar, with positive and negative charges on opposite sides in the molecule.
Which of the following are commonly soluble salts?Ammonium, potassium and sodium salts are soluble in water because they completely dissociate in the solution.
Is common salt most soluble in water?The sodium chloride is also known as common salt and it is an ionic compound. The common salt is polar in nature and it is soluble in water. But among the given compounds, common salt is not the most soluble compound.
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