Question

I)what is emperical formula?
II) how to find it ?
III) Give me any example :)

Answer 1

empirical formula :- the simplest whole number ratio of different elements present in a compound is called empirical formulae .

some step to find empirical formula .
let two elements A and B are given , X% and (100-X) % by weight is present in compound .then,
let molar mass of A and B is Ma and Mb
respectively


step 1 :- find separately ,
percentage/molar mass
e.g
for A => X/Ma
for B => (100-X)/Mb

step 2:- bigger value of percentage/M.wt dividing to smaller value .
the , and try to form in integer .

example :-
let C and O are given 60% ,40% respectively. then find empirical formulae????

step 1 :-

for C => 60/12 = 5
for H => 40/16 = 2.5

step 2:-

C => 5/2.5 = 2

O => 2.5/2.5 = 1

so, empirical formula = C2O