a floride of oxygen was prepared by mixing oxygen and flourine in the proper ratio.This compound cantains 32.1%flourine and 67.9%oxygen. what is the empirical formula of the compound? (at. wt of f =19 and o=16)

Asked by nileshpatel19752000 | 19th Sep, 2016, 06:05: PM

Expert Answer:

 Solution:

Element

Percentage by mass

Relative Number of Moles

Simple Ratio of Moles

Simplest Whole Number Ratio

F

32.1

 begin mathsize 12px style fraction numerator 32.1 over denominator 19 end fraction space equals space 1.64 end style

fraction numerator size 12px 1 size 12px. size 12px 64 over denominator size 12px 1 size 12px. size 12px 64 end fraction size 12px space size 12px equals size 12px space size 12px 1 

1 × 2 = 2

O

67.9

begin mathsize 12px style fraction numerator 67.9 over denominator 16 end fraction space equals space 4.24 end style 

 begin mathsize 12px style fraction numerator 4.24 over denominator 1.64 end fraction space equals space 2.50 end style

2.5 × 2 = 5

Simplest Whole number ratio is 2 : 5

Hence the empirical formula of compound is: O5F2

Answered by Hanisha Vyas | 19th Sep, 2016, 07:03: PM