Write the overall equation for the production of nitric acid by the Ostwald process combining the preceding equations (Water is also product ) Is the overall reactior exothermic or endothermic? Answer 88 Calculate AH" for each of the following reactions using the data in Appendix 4: 4Na(s) + 02(9) 2Naz O(s) 2Na(s) + 2Hz0(l) 2NaOH(aq) + Hz (9) 2Na(8) COz(9) NazO(s) + COlg) Explain why water Or carbon dioxide fire extin guisher might not be effective in putting out sodium fire_ The reusable booster rockets of the space shuttle use mixture of aluminum and ammonium perchlorate as fuel. A possible reaction is 3Al(0) + 3NH,CIO (s) ~ AlOs() + AICls() + 3NO(g) + 6HzO(g) Calculate 4H" for this reaction Anstu