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If a hot concentrated solution is cooled some of the solute comes out of the solution what is this process called?
Wiki User
∙ 14y ago
The process would be called evaporation.
Wiki User
∙ 14y ago
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Test of starch?
1. Place a small amount of starch powder in a test tube filled with cold water 2. Boil it to make a clear solution 3. Once the solution has cooled off, you should put 3 or 4 drops of iodine solution in it. 4. The solution should turn dark blue.
What is the chemical test to confirm the presence of starch?
1. Place a small amount of starch powder in a test tube filled with cold water 2. Boil it to make a clear solution 3. Once the solution has cooled off, you should put 3 or 4 drops of iodine solution in it. 4. The solution should turn dark blue.
When adding a spoonful of salt to water that is already boiling slowly it suddenly produces a lot of bubbles while the water is cooled and the boiling point raised how is this possible?
The presence of a non volatile solute in the solution decreases the vapour pressure of the solvent.So, when a spoonful of salt is added to boiling water, the temperature at which the water in the solution state boils is increased.
Which factor is important in making it possible to cool yourself by sweating?
During the process of evaporation, heat is absorbed in the surroundings, therefore, cooling it. In this cases, when sweat is evaporated, heat is absorbed in the surroundings and it is cooled, therefore, keeping you cool.
How to test for starch?
A chemical test for starch is to add iodine solution (yellow/brown) and look for a colour change.
When steam is cooled in the air you can see it condensing What process is that?
When steam is cooled in the air, you can see it condensing into a mist. This process is called condensation.
What will happen if a saturated solution of copper chloride is cooled?
A cooled saturated solution of copper chloride will precipitate crystals of copper chloride.
What is the process that happens when a vapour is cooled?
It's called condensation when vapour cools and turns into liquid.
What can cause water vapor in the air to be cooled?
The process is called condensation. It occurs when the water is cooled below its boiling point due to the temperature in the environment cooling it.
What is the process of water releasing heat called?
Evaporation. A body of water is cooled as a portion of it is converted to vapor by evaporation.
A KNO3 solution containing 45 g of KNO3 per 100g of water is cooled from 40 degrees celciuswhat will happen during cooling?
As the solution is cooled, the solubility of the solution decreases and a precipitate will form.
What is a hole in the bar?
When the material in liquid form at high temperature and when we convert in round bar with cooling process either air cooled or water cooled. when we do this process sometimes air bubble available and create a hole in round bar. it is called as porosity.
What would happen if a hot saturated solution was cooled quickly?
There Is No Way A Saturated Solution Can Be Cooled Quickly. But If It Did The Solution Would Desaturate.
How borax can be prepared?
From tincal: Tincal is boiled with water and the so;ution is then filtered to remove impurities of sand, clay etc. The filterate is concentrated till crystallization begins and then cooled. The crystals of borax are separated by filteration. From colemanite (Ca2B6O11): Ca2B6O11 + 2Na2CO3 -----Heat-----» Na2B4O7 + 2NaBO2 + 2CaCO3↓ 4NaBO2 + CO2 -----------» Na2B4O7 + Na2CO3 The insoluble calcium carbonate is filtered off .The remaing solution containg of borax and sod.metaborate is then treated with CO2 to convert sod.metaborate to borax.The solution is now concentrated and cooled to crystallize borax. From boric acid : Borax is prepared from boric acid by boiling with soda ash. On cooling the solution, borax separates out. 4H3BO3 + Na2CO3 ------------» Na2B4O7 + 6H2O +CO2 ↑
What causes the equilibrium to shift when a cooled saturated potassium nitrate solution is added to water?
When a cooled saturated potassium nitrate solution is added to water, the concentration of the potassium nitrate decreases making it less likely that he substance will precipitate out of solution.
What would happen if a hot saturated solution was cooled slowly?
Crystallisation
When a hot saturated solution is cooled?
The solute will gradually form a precipitate.
