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Problem Explication Group #3 Amber Gipson Erin Key Kelly Lee Amy Ozley

Problem Explication Group #3 Amber Gipson Erin Key Kelly Lee Amy Ozley.

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Problem Explication Group #3 Amber Gipson Erin Key Kelly Lee Amy Ozley

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  1. Problem ExplicationGroup #3Amber GipsonErin KeyKelly LeeAmy Ozley

  2. #64Calculate ∆H° 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.

  3. Equation:*Product - Reactant = ΔH* 4Na(s) + O2(g) 2Na2O(s) 4 (0) + 02(-416) -832 –0ΔH= -832 EXOTHERMIC!

  4. Equation:*Product - Reactant = ΔH* 2Na(s) +2H2O(l) 2NaOH(aq) + H2(g)0 + 2(-286) 2(-470) + 0 -940 - (-572) ΔH= -368 EXOTHERMIC!

  5. Equation:*Product - Reactant = ΔH* 2Na(s) + CO2(g) NA2O(s) + CO(g) 2 (0) + -395.5 -416 + -110.5 -526.5- -393.5 ΔH= -133.0 EXOTHERMIC!

  6. Answer:The reaction of water and sodium release heat. The reaction of carbon dioxide and sodium release heat also.They are both exothermic reactions.

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