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Topic: Ostwald Process- please help  (Read 5228 times)

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Offline planke

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Ostwald Process- please help
« on: October 19, 2007, 09:15:13 PM »
Please help me with this problem.

Nitric acid is produced commercially by the Ostwald process. The three steps of the Ostwald process are shown in the following equations.

4 NH3(g) + 5 O2(g) -> 4 NO(g) + 6 H2O(g)
2 NO(g) + O2(g) -> 2 NO2(g)
3 NO2(g) + H2O(l) -> 2 HNO3(aq) + NO(g)

What mass of NH3 must be used to produce 6.50 x 10^6 kg HNO3 by the Ostwald process, assuming 100% yield in each reaction?


Offline Borek

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Re: Ostwald Process- please help
« Reply #1 on: October 20, 2007, 04:06:27 AM »
Please read forum rules.

You may treat it as a simple stoichiometry, calculating how much NO2 must eneter last reaction, how much NO is required to produce this amount of NO2, and how much NH3 must be used to produce this amount of NO. But you may also go shorter route, just tracing what happens to nitrogen throughout the process. Hint: how many moles of HNO3 are produced for every 3 moles of NH3?
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