Nitric acid is now made by the oxidation of ammonia. t used to be made from air and water, but this process used very large amounts of electricity. Air was blown through an electric are and heated to 3000'C equilibrium 1 N . oe 2NO The equilbrium miture leaving the are contained SN of nitrie oide (NO) This mixture was cooled rapidly. A lower temperatures nitric oxide reacts with onygen to form nitrogen dioxide. equilibrium 2 (ONE ro PONE

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Chapter12: Chemical Equilibrium
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Problem 49E
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Nitrogen dioxide reacts with more oxygen and water to form nitric acid.

1. Suggest a reason why the yield of nitric oxide in equilibrium 1 increases with temperature

2. What effect if any would increasing the pressure have on the percentage of nitric oxide in equilibrium 1? Explain the answer

3. Deduce why equilibrium 2 is only carried out at a lower temperature

Nitric acid is now made by the oxidation of ammonia. It used to be made from air and
water, but this process used very large amounts of electricity.
Air was blown through an electric arc and heated to 3000'C.
equilibrium 1
Nale) + Ole) 2NOLE)
The equilibrium mixture leaving the are contained 5% of nitric oxide (NO). This mixture was
cooled rapidly. At lower temperatures nitric oxide reacts with oxygen to form nitrogen
dioxide.
equilibrium 2
2NOLe) + Ode) 2NOR)
Transcribed Image Text:Nitric acid is now made by the oxidation of ammonia. It used to be made from air and water, but this process used very large amounts of electricity. Air was blown through an electric arc and heated to 3000'C. equilibrium 1 Nale) + Ole) 2NOLE) The equilibrium mixture leaving the are contained 5% of nitric oxide (NO). This mixture was cooled rapidly. At lower temperatures nitric oxide reacts with oxygen to form nitrogen dioxide. equilibrium 2 2NOLe) + Ode) 2NOR)
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