Question

Sodium Chloride is decomposed into the elements sodium and chlorine by means of electrical energy. How many grams of chlorine gas can be obtained from 2.5 moles of sodium chloride?

Answer 1

2NaCl ==> 2Na + Cl2
2.5 mols NaCl will give you 2.5 x (1 mol Cl2/2 mols NaCl) = xx mols Cl2.
Convert that to grams Cl2.

Answer 2

1.25 g