There are different theories which help to determine whether a substance is an acid or base. The major and generally accepted theories are given below…
Different Grades of Purity of Alcohol
Alcohols are one of the widely used organic compounds. They are the organic compounds which contain hydroxyl (-OH) group as their functional groups. I…
Motion of An Electron in Electric Field
Let us consider that, an electron of mass ‘m’ moves with initial horizontal velocity ‘vx‘. While the electron enters the elect…
Indicators and Titration Curves
Indicators are the chemical substances which are used to determine the end points of titrations. Methyl orange, phenolphthalein, starch solution, eric…
Hall Effect
When magnetic field is applied perpendicular to a current carrying conductor, then voltage is developed across the conductor in the direction perpendi…
Moving Coil Galvanometer
Moving coil galvanometer is a device which is used to detect and measure small electric currents present in an electric circuit. Principle It is based…
Derivation of Expression for Torque on a Rectangular Coil
Let us consider a rectangular coil PQRS of length ‘l’ and breadth ‘b’ suspended in uniform horizontal magnetic field ‘B&…
Benzene and Its Preparation
Benzene is a cyclic compound which consists of six carbon atoms where there is presence of alternate double bonds and single bonds. It is an aromatic …
Hybridization
The formation of certain molecules involving Carbon, Boron, Beryllium etc. cannot be explained satisfactorily on the basis of VSEPR (Valence Shell Ele…
Primary Standard Substance and Normality Factor
Primary Standard Substance The solution having known concentration is called standard solution. The substance whose standard solution can be prepared …