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Water solubility means that this substance can be dissolved in water, such as water-soluble resin, water-soluble paint, water-soluble phosphate fertilizer, water-soluble glue, etc.;
After being dissolved in water, many have a dissolution upper limit, that is, saturated solubility, such as sodium bicarbonate at an atmospheric pressure of 18 degrees, at this temperature, sodium bicarbonate can no longer be dissolved, and if you want to improve solubility, you need to increase temperature and pressure. Each temperature corresponds to a saturation solubility. If this amount is exceeded, it will be precipitated in the form of crystal water, etc.
Alcohol is miscible with water and has no saturated solubility.
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Solubility: The maximum number of grams of solute that can be dissolved in 100g of solvent at a certain temperature and pressure.
Water solubility: The chemical process by which a compound is cracked into two or more simpler compounds. The H and Oh moieties of the water molecule are involved in the reaction on either side of the cleavaged chemical bond.
For example, fats are hydrolyzed under the action of acids, alkalis, and lipases to form glycerol and fatty acids or smaller molecules.
Dissolution does not take place in a chemical reaction, whereas hydrolysis only takes place in a chemical reaction.
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This, I thought, solubility.
It is a broad concept, no solvent is specified, water solubility obviously indicates the solubility in water, phthalic acid is organic matter, and organic matter is not all soluble in water, so it is an index of water solubility, and its solubility is methanol.
Do solvents.
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Solubility is related to temperature, pressure, and solvent type.
The volume of gas dissolved in 1 volume of water at a certain temperature when it reaches saturation. Gas solubility is affected by factors such as gas type, pressure, temperature, etc.
For example, at a standard atmospheric pressure, 1 volume of water can dissolve a volume of oxygen, and the solubility of oxygen at this time is. In addition to the nature of the gas and the properties of the solvent, the solubility of the gas is also related to the temperature and pressure, and its solubility generally decreases with the increase of temperature.
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In addition to the properties of the substance itself, it is the temperature that affects the solubility of the substance. The solubility of most substances increased with the increase of temperature. Some are less affected by temperature changes, such as sodium chloride; Others decrease with increasing temperature, such as calcium hydroxide.
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1. The nature of the substance itself.
2. The nature of the solvent.
3. Temperature. 4. Pressure (gas consideration).
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1.The nature of the solute itself, 2Temperature.
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1. The meaning is different.
Solubility, symbol S, at a certain temperature, the mass of the solute dissolved by a solid substance when it reaches saturation in 100g of solvent is called the solubility of the substance in this solvent.
Solubility refers to the maximum amount of solute that a solution that reaches (chemical) equilibrium cannot hold more solutes, and refers to the maximum amount of dissolution of a substance in a particular solvent. Under special conditions, more solute is dissolved in the solution than normal, and it becomes a supersaturated solution.
2. The nature is different.
The solubility of a substance is a physical property.
Solubility is a physical property of a substance when it forms a solution. It refers to a property of the solubility of a substance in a particular solvent.
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1. Solubility of the substance.
It is an inherent property of matter itself, and it is an important physical property of matter.
It indicates the ability of one substance to dissolve in another, depending on both the nature of the solute itself and the relationship between the solute and the solvent. Substance solubility is usually expressed in terms of rough concepts such as soluble, soluble, slightly soluble, insoluble, or insoluble.
2. Solubility and solubility.
Meaning. 1) Solubility is a physical property of a substance in the formation of a solution. It refers to a property of the solubility of a substance in a certain solvent.
2) Solubility is a measure of the solubility of a substance in a certain solvent, and it is a quantitative expression of solubility.
3) The concept of solubility not only contains the meaning of the solubility of the substance, but also further reflects the specific quantity under the specified conditions.
3. The solubility of a substance is not only related to the properties of the solute, but also to the properties of the solvent. For example, table salt is easily soluble in water, but it is difficult to dissolve in gasoline. Grease is difficult to dissolve in water, but it is easily soluble in gasoline, and alcohol and water can be miscible in any proportion. This is determined by the nature of alcohol and water.
4. The saturated solution of one substance can continue to dissolve another solute. For example, a saturated solution of table salt can continue to dissolve sucrose when the external conditions remain unchanged.
And it can also reach the state of "double saturation". The reason for this is that there is a certain interval between the molecules (or ions) of the substance. It's like a bucket full of broad beans that can be filled with a certain amount of millet.
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1. The solubility is different.
The order of solubility from largest to smallest is:
Not easily soluble in water》Difficult to dissolve in water》Insoluble in water.
2. The definitions are different.
Insoluble in water: It will not be miscible with water under any conditions.
Insoluble in water: It can only be achieved under harsh conditions.
Not easily soluble in water: Oak-free will be miscible with water at room temperature, but it is OK under certain conditions (e.g., warming, low temperature).
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Solubility refers to the ability of a substance to dissolve in a solvent.
Solubility is determined by the solubility of a substance at 20 hours.
Solid) insoluble (insoluble) slightly soluble soluble soluble soluble 20) 10g
Solubility is a measure of the solubility of a substance;
Solubility, the mass dissolved by a solid substance when it reaches saturation in 100g of solvent at a certain temperature, is called the solubility of the substance in this solvent.
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Solubility refers to the number of grams of solute that can be dissolved when saturated in 100 grams of solvent at a certain temperature. Definition of simple cluster: m (solute) m (solvent) = s (solubility) 100g (solvent) solute mass fraction in saturated solution = s (100g + s)] 100%.
Solubility is related to temperature and will vary depending on temperature, generally the higher the temperature, the greater the solubility. On the contrary, such as calcium hydroxide, the solubility in water decreases as the temperature increases.
Solubility formulas Potassium, sodium, ammonium, salt, nitrate, can dissolve in the middle of water. Hydrochloride does not tolerate silver, mercury, sulfate does not tolerate barium and lead, carbonate takes care of potassium dissolved sodium ammonium solubility formula 1 potassium sodium ammonium salt dissolves water quickly, sulfate removes barium lead calcium. Chloride is insoluble silver chloride, nitrate solution is transparent. >>>More