Chemistry Podcast
Sunday, 25 September 2016
What is Wet Chemistry
Saturday, 24 September 2016
What is Normality ?
What is Normality ?
Normality is the ratio of gram equivalent weight to volume of solution in liter.
where gram equivalent is the measure of reactive capacity of molecule consider for normality.
Normality (N) :-
Gram equivalent weight / Volume of the solution in liter.
Unit => N = "eq/L" (equivalent per liter)
Thursday, 8 September 2016
Aufbau Principle, Pauli Exclusion Principle and Hund’s Rule of Maximum Multiplicity
Aufbau Principle
According to this principle in the ground state of the atoms the orbital’s are filled in order of their increasing energies means electrons enter higher energy orbital’s so order in which orbital’s are filled is 1s, 2s, 2p, 3s, 3p, 4s, 3d, 4p, 5s, 4d, 5p, 6s, 4f, 5d, 6p, 7s, 5f, 6d, 7p.Pauli Exclusion Principle
·
given by W. Pauli (1926).
·
Two electrons in an atoms can’t have
same set of 4-quantum no.
·
Only two electrons may exist in same orbital
and these electrons must have opposite spin.
Hund’s Rule of Maximum Multiplicity
·
According to this rule pairing of electron in the orbital’s belonging to the
same sub-shell (p, d or f)
·
Does not take place until each orbital
belonging to that sub-shell has got one electron each i.e. it is singly occupied.Thursday, 1 September 2016
What is Molality ?
What is Molality?
It is the ratio of moles of substance to kilogram of solvent.Where mole is weight in gram divided by molecular weight.
Molality is chemistry terminology.
Molality (m) :-
No. of moles of the solute / Mass of solvent in Kilogram (Kg).
Subscribe to:
Posts (Atom)
https://chemistrynotesinfo.blogspot.com
NOTE:
If error occur=> Change website url from www.chemistrynotesinfo.blogspot.in to www.chemistrynotesinfo.com