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Inductive effect - Relative reactivity of aldehydes and ketones The comparative re-activities of aldehydes and ketones in nucleophilic addition reactions might be attributed to
Sodium alkyl benzene sulphonates Sodium p-dodecyl benzene sulphonate abbreviated as S.D.S. work as a good detergent. It is most broadly used since 1975. These long chai
chemical properties of dihydrogen
The band model of solids is an extended of the molecular orbital (MO) method. The overlap of atomic orbitals in an extended solid produces rise to continuous bands of electronic en
Assignment on structure of atom
Oxidation Reduction Titrations The titrations based upon oxidation-reduction reactions are termed redox titrations. The chemical reactions proceed along with transfer of electr
In the industrial production of sulphuric acid, SO 3 is carefully reacted with water: SO 3 + H 2 O → H 2 SO 4 any excess SO 3 giving rise to what is called oleum, a solut
When is fresh produce to harvest? Optimum quality of fruits and vegetables is obtained only when they are harvested at the optimal stage of maturity. A critical time for
E1cb means elimination, unimolecular, of the conjugate base. This type elimination proceeds through the carbanion mechanism. An carbon compound, acting as an acid, is attacked by
The electron pair which forms a bond between two similar non-metallic atoms will be: (1) Dissimilar shared between the two (2) By complete transfer from one atom to other
Colloids are classified as two types which are the lyophilic / reversible and lyophobic / irreversible. If water is the dispersion medium, then the term used are hydrophilic and hydrophobic.Lyophilic colloids: A colloidal system which may be constructed readily by simple warming or shaking the substance in a suitable solvent is called as lyophilic colloid. Substances that form lyophilic colloids involves gelatin, starch, and rubber, proteins, gum. Lyophilic colloids are also named as reversible colloids as on evaporating the dispersion medium such as water, the substance or the residue may be again reconverted into colloidal state simply by addition of the liquid i.e. water. These solutions are reasonably stable and usually cannot be easily precipitated.Lyophobic colloids: colloids constructed with difficulty are termed as lyophobic colloids. These colloids are constructed by substances such as As2S3 , Fe(OH)3, gold and other metals that are sparingly soluble and thus their molecules do not pass readily into colloidal state. Lyophobic colloids are called as irreversible colloids since the residue cannot readily be reconverted into sol by ordinary means. These solutions are quite readily precipitated and hence they are not stable.
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