AP EAPCET 24-Aug-2021 Shift 1 Paper

Mass percentage of a componcnt
=

Mass‌of‌a‌component

Total‌mass

×100
In a molecular of CCl4 (carbon tetrachloride),
=1C+4‌Cl atoms are present.
Atomic mass of C=12.01,Cl=35.5
Molecular mass of CCl4=154
Mass % of C=

12.01

154

×100=7.79
Mass % of Cl=

4(35.5)

154

×100
=

142

154

×100=92.7
So, mass \% of C and Cl is approximately cqual to 7.84 and 92.80 respectively.