Problem: Calculate ΔHrxn for each of the following reactions using the data in Appendix 4:4Na (s) + O2 (g) → 2Na2O (s)2Na (s) + 2H2O (l) → 2NaOH (aq) + H2 (g)2Na (s) + CO2 (g) → Na2O (s) + CO (g)Explain why a water or carbon dioxide fire extinguisher might not be effective in putting out a sodium fire.

FREE Expert Solution

Below is a compiled list of the enthalpy of formation values of each species involved in the reactions: 

To solve for ΔHo we use the formula below: 

Note: n and m in the equation are just the coefficients in the reaction. 

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Problem Details

Calculate ΔHrxn for each of the following reactions using the data in Appendix 4:

4Na (s) + O2 (g) → 2Na2O (s)

2Na (s) + 2H2O (l) → 2NaOH (aq) + H2 (g)

2Na (s) + CO2 (g) → Na2O (s) + CO (g)

Explain why a water or carbon dioxide fire extinguisher might not be effective in putting out a sodium fire.

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