Category Archives: Chemistry Tutorial

Iodine Value

Posted by sksaini Date: February 27, 2017

Iodine value is the number of iodine in gram that is consumed by 100gm of substance under observation. Iodine numbers are often used to determine the amount of unsaturation in fatty acid. (unsaturation in form of double bonds, which react with iodine compounds) Higher the iodine number more C=C bonds are present in the fat. […]

Saponification value & its Significance

Posted by sksaini Date: February 19, 2017

Defination: Saponification value of an oil ,fat or of an ester is defined as the number of milligrams of potassium hydroxide(KOH) required to completely neutralize the free acids to saponify the esters present in 1gm of the substance. i.e. to neutralize the fatty acid resulting from the complete hydrolysis of 1gm of the oil or […]

Atomic Absorption Spectroscopy

Posted by sksaini Date: February 12, 2017

Principle if the absorption process takes place in the flame under REPRODUCIBLE Conditions,the absorption is propotional to the number of absorbing ions/atoms. • This technique is based on the fact that when atoms ,ions or ion complexes of an element in the ground state are atomised in a flame. • They absorb light at characteristic […]

Flame photometry

Posted by sksaini Date: January 2, 2017

Flame photometry is Based on principle that the colour of the flame gives up the concentration of metal ions in the solution as by beer-lambert’s law intensity depends upon the concentration and path length. View full video👇 Now ,What is Atomization ? Reduction of metal ion in the solvent to metal atom by the flame. […]

Non-Aqueous Solvents

Posted by sksaini Date: August 11, 2016

As we know most of the chemical reactions requires solution phase for them to carry out, hence for this we need different kinds of solvents. In the earlier days of development of chemistry, the reactions have been carried out only in one solvent”water”. Because of different physical and chemical properties of water such as ,Long […]