Hydrolysis of esters in the presence of strong soluable bases.
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Pair of electrons involved in a covalent bond.
A substance of a known high degree of purity that undergoes one invariable reaction with the other reactant of interest.
A change in which a substance changes from one physical state to another but no substances with different composition are formed. Example Gas to Liquid - Solid.
An artificially induced nuclear reaction caused by the bombardment of a nucleus with subatomic particiles or small nucei.
The release of heat by a system as a process occurs.
Any of a subgroup of rare-earth elements, of which the cerium and terbium metals comprise the other two subgroups.
The elements in a horizontal row of the periodic table.
Discovered : by Henry Cavendish in 1766.
Isolated in London, UK.
Origin : The name is derived from the Greek ‘hydro genes’, meaning water forming.
Description :A colourless, odourless gas that burns and can form an explosive mixture with air. It is currently manufactured from methane gas, but is also produced by the electrolysis of water and aqueous salts. The gas is used to make such key materials as ammonia, cyclohexane and methanol, which are intermediates in the production of fertilisers, plastics and pharmaceuticals. Some see hydrogen gas as the clean fuel of the future - generated from water and returning to water when it is oxidised. Hydrogen-powered fuel cells are increasingly being seen as pollution-free sources of energy.
The separation of a liquid mixture into its components on the basis of differences in boiling points. The process in which components of a mixture are separated by boiling away the more volitile liquid.
Resistance offered by the molecules of a liquid to flow is termed as viscosity.
Liquids that, when cooled, apparently solidify but actually continue to flow very slowly under the influence of gravity e.g glass.
Unit of electrical charge.
Group of atoms remaining after a hydrogen atom is removed from the aromatic system.
Specific distribution of electrons in atomic orbitals of atoms or ions.
CA3COOH, clear, colorless liquid, pungent odor. Boiling point 140C, flash point 54C (closed cup), autoignition temperature 38OC.
Regular periodic variations of properties of elements with atomic number (and position in the periodic table).
A negative ion, an atom or goup of atoms that has gained one or more electrons.
Ability of a substance to exhibit amphiprotism by accepting donated protons.
A sample of matter composed of two or more substances, each of which retains its identity and properties.
The dispersing medium of a solution.