Question: The Ostwald process for the commercial production of nitric acid

The Ostwald process for the commercial production of nitric acid from ammonia and oxygen involves the following steps:
4NH3(g) + 5O2(g) → 4NO(g) + 6H2O(g)
2NO(g) + O2(g) → 2NO2(g)
3NO2(g) + H2O(l) → 2HNO3(aq) + NO(g)
a. Use the values of ΔH8f in Appendix 4 to calculate the value of ΔHo for each of the preceding reactions.
b. Write the overall equation for the production of nitric acid by the Ostwald process by combining the preceding equations. (Water is also a product.) Is the overall reaction exothermic or endothermic?

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  • CreatedMay 05, 2015
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