How Soap perform cleansing action?
Soaps and detergents perform the cleaning action because the polar parts of their molecules are water soluble due to hydrogen-bonding and non-polar parts remain outside water.
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Solvent extraction
The removal of a solute from its solution by the addition of a solvent in which the solute is more soluble but which itself is not soluble in solution is called solvent extraction. Ether Extraction: Many organic compounds are produced along with minor products in aqueous solution. Such compounds are shaken with ether taken in…
Molar Volume of a Gas Definition
The volume of one mole of an ideal gas at standard temperature and pressure is called molar volume of a gas and is equal to 22.414 dm3 at STP (Standard temperature & pressure) & 24 dm3 at RTP (Room temperature & pressure). Explanation: At standard temperature and pressure: 2 g of hydrogen (H2) = 1…
Liquid Crystals
The pure solids or crystalline solids melt sharply. The temperature remains constant at its melting point until all the solid melts. There are some solids which pass through turbid state before melting. These turbid phases are called liquids crystals because they can flow as liquids. They have the properties like liquids as surface tension, viscosity…
Why fish and plants survive underneath water in winter?
The lower density of ice than liquid water at 0°C compels water in ponds and lakes to freeze from surface to the downward direction. Water attains the temperature of 4°C by the fall of temperature in the surrounding. As the outer atmosphere becomes further cold, the water at the surface becomes less dense. This less…
What is Relative abundance of isotopes?
The relative abundance of isotopes of an element is determined by mass spectrometry. The properties of an element mostly correspond to the most abundant isotopes of that element. More than 280 isotopes are known, which occur in nature, out of which 40 are radioactive. Moreover, about 300 artificial isotopes have been produced through disintegration. Mono-isotopic…
Why Temperature Remains Constant At Boiling Point?
When a liquid is heated, the kinetic energy of its molecules increases in other words the temperature increases as well as the rate of vaporization increases. When the kinetic energy of the molecules becomes maximum i.e., boiling point is reached any further heating at this stage will not increase the temperature rather heat will only…
