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Suggest a test chemical that can be added to waste water to precipitate lead II ions show a chemical equation for the formation of the precipitate?
Put a little hydrochloric acid in the water sample. 2HCl + Pb -> H2 + PbCl2. Lead chloride is insoluble and its density is much higher than that of water. You can then perform a test on the precipitate to determine the ratio of lead chloride to silver chloride in your precipitate.
Cobalt chloride will give a positive test for?
Cobalt chloride is used to test for the presence of water. If there is no water present it is blue, if water is present it goes pink.
How can you separate the calcium chloride from the water?
You can separate calcium chloride from water through evaporation. Heat the solution to evaporate the water, leaving behind solid calcium chloride.
Cobalt chloride paper test?
The cobalt chloride paper test is a simple test used to detect the presence of moisture in a given sample. When it comes into contact with water, cobalt chloride changes color from blue to pink. This paper test is commonly used in science experiments and as a qualitative indicator for water in various substances.
Why does the cobalt chloride test paper turn pink when wet?
Cobalt chloride test paper is blue when dry because of the presence of hydrated cobalt chloride. When it comes into contact with water, the chloride ions displace the water molecules from the cobalt chloride structure, resulting in the formation of a pink-colored hexa-aqua complex of cobalt chloride.
How can you tell the difference between amonium chloride and silver chloride?
Ammonium chloride is a white crystalline solid that is soluble in water and has a distinctive odor, while silver chloride is a white solid that is insoluble in water. Additionally, you can differentiate them chemically by performing a simple solubility test - ammonium chloride will dissolve in water while silver chloride will not.
Why does silver nitrate test provide negative result on the presence of a chloride ion?
The silver nitrate test provides a negative result on the presence of a chloride ion because silver chloride is insoluble in water and forms a white precipitate when silver ions react with chloride ions. This precipitate masks the presence of the chloride ion in the test solution, giving a negative result.
Mention and explain two test for the presence of water?
One test for the presence of water is the cobalt chloride paper test, where a piece of paper treated with cobalt chloride changes from blue to pink in the presence of water. Another test involves using an anhydrous metal salt, like anhydrous copper(II) sulfate, which turns from white to blue when it absorbs water molecules.
Why anhydrous copper II chloride is used to test for the presence of water?
Anhydrous copper II chloride is used to test for the presence of water because it readily absorbs moisture. When anhydrous copper II chloride reacts with water, it forms a blue-green hydrated copper II chloride compound, helping to detect the presence of water by a visible color change.
What are two tests distinguish between ethanol and phenol?
The ferric chloride test: Ethanol does not react with ferric chloride, while phenol forms a purple color when mixed with ferric chloride. The bromine water test: Ethanol does not react with bromine water, while phenol decolorizes bromine water due to its reducing properties.
What is the rate of test tube baby procedure in Pakistan?
Do you think doctors actually come on here and waste their time with stupid questions like these
What element is responsible for the formation of cloudy solution in the silver nitrate test?
The formation of a cloudy solution in the silver nitrate test is a result of the precipitation of silver chloride when it reacts with chloride ions in the sample. Silver chloride is insoluble in water, leading to the formation of a cloudy appearance in the solution.
