Which gas is used in fire extinguisher?

Sodium metal can react vigorously with an oxidizing agent and cause a fire. Two common types of fire extinguishers are water extinguishers and carbon dioxide extinguishers. Calculate AH° for each of the reactions below and explain why a water or carbon dioxide fire extinguisher might not be effective in putting out a sodium fire. 4Na(s) + 02(g) → 2Na20 (s) 2Na(s) + 2H20(1) → 2NaOH (aq) + H2(g) 2Na(s) + CO2(g) → Na20(s) + CO (g)

3. If you are given four choices of gas (O, H2, Na or CO2) to be used in a fire extinguisher, which one would you choose? Explain why each gas would be suitable or not suitable. You can use some ideas from Experiment 2 (see page 6) that you performed in the lab. (2 pts)