Some Basic concepts of chemistry Formulae Flashcards
1
Q
No of Moles:
A
- Given mass/Atomic mass
- Given mass/Molecular mass
- No of particles/Avagadro’s number
Avagadro’s number = 6.022 x 10²³
2
Q
Percentage of any element:
A
Mass of the element/Molecular mass x 100
3
Q
Mass percentage:
A
Mass of the given solute/Mass of the given solution x 100
4
Q
Molarity:
A
No of moles of a solute/
Volume of a solution (litres)
5
Q
Mole fraction:
A
No of moles of solute/Total moles of a solution
A+B→AB
6
Q
Normality:
A
Gram equivalent of the solute/Volume of the solution (l)
7
Q
Equivalent Mass:
A
Molar mass/n
n = basicity
Basicity is the No of Hydrogen ions dissociated in a solution
8
Q
Gram equivalent:
A
Mass of the solute/Equivalent mass
