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Separation of the Constituents of Mixtures - Evaporation
The process by which a soluble solid can be obtained from a solution by allowing the solvent to vaporize, is called evaporation. Many of you might be aware, that for preparing salt, seawater is taken in large pans and water is allowed to evaporate, by the heat of the sun. In the laboratory, salt ca..
The process by which a soluble solid can be obtained from a solution by allowing the solvent to vaporize, is called evaporation. Many of you might be aware, that for preparing salt, seawater is taken in large pans and water is allowed to evaporate, by the heat of the sun. In the laboratory, salt ca..Milk of Sulphur
Milk of sulphur is prepared by the action of dilute hydrochloric acid on ammonium sulphide. Milk of sulphur is also prepared by boiling roll sulphur with an aqueous solution of calcium hydroxide. The mixture is then filtered and dilute hydrochloric acid is ad..
Properties of Iron and Sulphur
Properties Iron Sulphur Colour Greyish black Yellow Action of magnet Attracted Not attracted On stirring the mixture with water Sinks, and forms the lower layer of iron Sinks and forms a layer over the iron Action of dilute acids Dissolves, producing h..
Allotropes of Sulphur
Rhombic Sulphur (Octahedral or Alpha Sulphur) Rhombic sulphur is prepared by dissolving roll sulphur in carbon disulphide, and then evaporating the solution slowly, at room temperature. Eight sided crystals of rhombic sulphur ..
Extraction of Sulphur
Extraction of Sulphur - Sulphur is extracted from underground deposits by pumping superheated steam (-440 K) down the beds to melt the element and then blowing out the molten sulphur with compressed air. This process is known as Frasch process. Sulphur is als..
Extraction of Sulphur - Sulphur is extracted from underground deposits by pumping superheated steam (-440 K) down the beds to melt the element and then blowing out the molten sulphur with compressed air. This process is known as Frasch process. Sulphur is als..Allotropy in Sulphur
A chemical element is said to exhibit allotropy when it occurs in two or more free forms in the same physical state; the forms are called allotropes. Allotropes generally differ in physical properties such as color and hardness; they may also differ in molecular structure or chemical activity..
Allotropy in Sulphur
A chemical element is said to exhibit allotropy when it occurs in two or more free forms in the same physical state; the forms are called allotropes. Allotropes generally differ in physical properties such as color and hardness; they may also differ in molecular structure or chemical activity, but..
A chemical element is said to exhibit allotropy when it occurs in two or more free forms in the same physical state; the forms are called allotropes. Allotropes generally differ in physical properties such as color and hardness; they may also differ in molecular structure or chemical activity, but..Air as a Mixture Summary
Summary - Troposphere is the blanket of air in which we live where all the weather is formed. Air is a mixture of 78.1% of nitrogen, 20.9% oxygen, 0.03 - 0.04% carbon dioxide, 0.94% noble gases and water vapour. Air is a mixture for the following reasons: - Air has a v..
Types of Mixtures
Matter MixtureType Example Solid Solid mixture Iron filings and sulphur Solid Liquid mixture Common salt and water Solid Gas mixture Air entrapped in soil Liquid Gas mixture Oxygen dissolved in wa..
Physical Properties of Sulphuric Acid
Boiling Point Pure sulphuric acid on boiling decomposes to give water and sulphur trioxide. During boiling more sulphur trioxide is lost than water. As a result, the concentration becomes 98.33%. The acid of this concentration forms a constant boiling ..
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