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What happens when electric current is pass through a colloidal solution?
When an electric current is passed through a colloidal solution, the colloidal particles may migrate towards the electrodes due to the electrical charge. This process is known as electrophoresis. Additionally, the movement of colloidal particles may cause them to coagulate or form larger aggregates.
Why do hot particles move faster than the cool gas particle?
Hot particles have more kinetic energy, which causes them to move faster compared to cooler gas particles. The increased temperature leads to a greater average speed of the hot particles, resulting in faster movement within the gas.
What is the difference in hot and cold air particles?
Hot air particles have more energy and move more quickly compared to cold air particles, which have less energy and move more slowly. This results in hot air being less dense and rising, while cold air is denser and sinks.
In hot air are particles closer together?
In hot air, the particles have higher kinetic energy, causing them to move faster and spread out more, resulting in a decrease in density and the particles being farther apart.
What is the difference between hot air particles and cold air?
The difference lies in the speed of particles, not in the composition or structure of the individual particles themselves. Temperature measures the average speed of particles, so the particles which compose hot air are going to be moving faster than the cold air particles. Because of this, the two take on new properties - hot air will expand more rapidly and rise, while cold air will sink.
How insoluble particles can be removed from hot solution?
Insoluble particles can be removed from hot solution by filtration.
How insoluble impurities removed during recrystallization?
Insoluble impurities are removed during recrystallization by filtration. After dissolving the mixture in a hot solvent and allowing it to cool, the desired compound forms crystals while the insoluble impurities remain suspended in the solution. The crystals are then collected through filtration, separating them from the impurities.
How are soluble impurities removed during a recrystallization?
Soluble impurities are removed during recrystallization by dissolving the impure solid in a hot solvent, then filtering the hot solution to remove insoluble impurities. The solution is then cooled slowly, allowing the pure compound to crystallize out while the impurities remain in solution. The pure crystals can be separated from the solution by filtration.
Why is it necessary to filter the solution while its hot?
If you have a solution, you have a solute (usually a solid) dissolved in a solvent. When you cool the solution, you increase the odds of the solute reassociating, thus forming solid crystals that you can then filter out to recover the product.
Does real cocoa powder fully dissolve in hot water or is it just a suspension?
It dissolves for the most part. Add enough, and it soon becomes more of a mixture than a solution.
How does the recrystallization produce remove solvent soluble impurities?
Soluble impurities are removed by a process of vacuum filtration
Which Metallic Chloride is Insoluble in Cold and hot water?
Silver chloride (AgCl) is insoluble in both cold and hot water.
Why hot tea is a solution?
Yes, It is a mixture of water, and tealeaves. A chemical reaction does not occur.
Is hot chocolate a suspension a solution or a colloid?
Hot chocolate is a colloid. It is a mixture where small particles of chocolate or cocoa are dispersed throughout a liquid (milk or water) to form a stable mixture.
When a hot saturated solution is cooled?
When a hot saturated solution is cooled, the solubility of the solute decreases, causing excess solute particles to form a precipitate. This is known as recrystallization, where the solute molecules come together and solidify to form crystals in the solution.
Why is it necessary to filter the benzoic acid solution while hot?
Filtering the benzoic acid solution while hot helps to keep the compound in solution as it cools, preventing it from crystallizing and clogging the filter paper. This ensures that all impurities are removed from the solution before it solidifies.
Why did the penny turn silver after a few minutes in the hot solution?
The hot solution likely removed the copper oxide layer on the penny, revealing the silver-colored zinc underneath. Heating caused a chemical reaction that removed the tarnished layer on the penny, giving it a shiny appearance.
