Properties and Uses
Chlorine - 37
At room temperature it appears as a light green gas. Since the bond that forms between the two chlorine atoms is weak, the Cl2 molecule is very reactive. Chlorine reacts with metals to produce salts called chlorides. Chloride ions are the most abundant ions that dissolve in the ocean. Chlorine also has two isotopes: 35Cl and 37Cl.
This is an ionic compound with single replacement.
2Fe(s) + 3Cl2(g) ------------> 2FeCl3(s)
You have one mole Cl2 reacting with one mole of Fe.
n Cl2 reacting = ( 0.100 mole Fe ) ( 1.0 mole Cl2 / 1.0 mole Fe )
n Cl2 reacting = 0.100 mole
% of Na is 39.34
% of Cl is 60.66