A ruptured tank in Anywhere, USA, spilled
hydrochloric acid. Officials were reported to
be concerned that the acid might mix with
sodium hydroxide (caustic soda) in a neigh-
boring tank and form a toxic gas. What toxic
gas would be formed by mixing hydrochloric
acid with sodium hydroxide?
1. carbon dioxide
2. chlorine dioxide
3. None
4. chlorine
2 answers
2B
HCl + NaOH --> H2O + NaCl so 3. None