Question

Suppose that a 0.6123-g unknown chloride-containing sample was dissolved, and and AgCl precipitated by adding a AgNO3 solution. The precipitate was filtered, ignited, and found to weigh 0.3324 g. What was the percent chloride in the unknown?

Answer 1

moles AgCl = mass AgCl/molar mass AgCl.
moles Cl^- is the same as moles AgCl since there is 1 Cl ion in 1 molecule of AgCl.
Then grams Cl = moles Cl x atomic mass Cl.
%Cl = (mass Cl/mass sample)*100 = ?%

Answer 2

13.39%