One person is dead and another injured after two people attempted to clear a clogged drain and mixed the wrong chemicals, according to the Southern Illinoisian. In Grand Tower, Alvin S. Heggie, 68, mixed a commercial drain cleaner with bleach, creating a poisonous gas that killed him.

It is likely that Mr. Heggie died from inhaling high levels of chlorine gas (considered a chemical weapon by the United Nations) produced from the following unbalanced reaction below.

____NaOCl (aq) + ____HCl (aq) → ____Cl2 (g) + ____H2O (l) + ____NaCl (aq)

1. Balance equation

2. What mass in grams of chlorine gas is produced when 25 moles of hydrochloric acid reacts with an excess of sodium hypochlorite?

3. Knowns?

4. Unknowns

5. Strategy/Equations

6. Substatute and solve