chemistry

One of the steps in the Ostwald process for the production of nitric acid involves oxidation of ammonia.

4NH3 (aq) + 5O2 (g) <---> 4NO (g) + 6H2O (g), Delta H= -905kJ

a) State the reaction conditions that favour the production of nitrogen monoxide.
b) A rhodium/platinum alloy is used as a catalyst. What effect does the catalyst have on the position of the equilibrium. Explain.
c) A relatively low pressure of about 710 kPa is used. Suggest why.
d) In the next step of the Ostwald process, nitrogen monoxide is mixed with air to form nitrogen dioxide:

2NO (g) + O2(g) <----> 2NO2(g) , Delta H= -115kJ

Why are the gases cooled for this reaction?

Thanks

  1. 👍
  2. 👎
  3. 👁
  4. ℹ️
  5. 🚩
  1. a) State the reaction conditions that favour the production of nitrogen monoxide.
    If this question is asking for the best production AT EQUILIBRIUM then cool and low pressure. Under these conditions; however, the reaction is too slow to be useful and generally, in real practice, higher T and higher P are used.

    b) A rhodium/platinum alloy is used as a catalyst. What effect does the catalyst have on the position of the equilibrium. Explain.
    A catalyst changes ONLY the rate of the reaction. It has no effect on the final equilibrium.

    c) A relatively low pressure of about 710 kPa is used. Suggest why.
    Low pressure shifts the reaction to the side with fewer moles. That is the product side

    d) In the next step of the Ostwald process, nitrogen monoxide is mixed with air to form nitrogen dioxide:

    2NO (g) + O2(g) <----> 2NO2(g) , Delta H= -115kJ

    Why are the gases cooled for this reaction?
    <b.Cooling uses up the heat produced and shifts the reaction to the right.

    1. 👍
    2. 👎
    3. ℹ️
    4. 🚩

Respond to this Question

First Name

Your Response

Similar Questions

  1. Chemistry -pls help urgent

    1) How do I prepare 2M nitric acid from 65% concentrated nitric acid? 2) How do I prepare 17% ammonia from 25% concentrated ammonia? Please show calculation steps. Thanks.

  2. chemistry

    Nitrobenzene, C6H5NO2, is prepared from benzene, C6H6, and nitric acid, HNO3. The other product of the reaction is water. When 22.4 g of benzene is reacted with an excess of nitric acid, 31.6 g of nitrobenzene is produced. What is

  3. science

    Which are the reactants of photosynthesis? C6H12O6+ 6O2 CO2 + H2O+ ATP C6H12O6 + O2 CO2 + H2O*** One molecule of glucose can release a total of _____ molecules of ATP during its breakdown. 36*** 38 32 34 How is carbon moved

  4. chemistry(Urgent Please help)

    A student is asked to standardize a solution of barium hydroxide. He weighs out 0.945 g potassium hydrogen phthalate (KHC8H4O4, treat this as a monoprotic acid). It requires 33.9 mL of barium hydroxide to reach the endpoint. A.

  1. Chemistry-please help

    "Use a 10% w/v nitric acid solution." How to prepare 10% w/v nitric acid solution? Do I just weigh 10g of conc nitric acid (65%) and dilute to 100ml with water?

  2. Chemistry

    Nitric Acid is produced from nitric oxide, NO which in turn is prepared from ammonia by the ostwald process. 4NH3 + 5O2 -----> 4NO + 6H2O What volume of oxygen at 35 degrees C and 2.15 atm is neeeded to produce 50.0 g of nitric

  3. chemistry

    calcium hydroxide is titrated with nitric acid.What volume of 0.0200 M calcium hydroxide is required to neutralize 35.00 ml of 0.0500 M nitric acid?

  4. chem

    How many grams of nitric acid(HNO3) will be produced when 0.51 mol of dinitrogen pentoxide reacts with water to form nitric acid?

  1. Chem

    Nitric acid is produced commercially by the Ostwald process, represented by the following equations: 4NH3(g) + 5O2(g) > 4NO(g) + 6H2O(g) 2NO(g) + O2(g) > 2NO2 (g) 3NO2(g) + H2O(l) > 2HNO3(aq) + NO(g) What mass of NH3 must be used

  2. Chemistry

    How to make 10% nitric acid? wouldnt it be 10 mL nitric acid + 100 mL of solvent, making it 10%? What molarity is used it to make 10% nitric acid?

  3. Chemistry

    Barium carbonate and nitric acid reacts in a double displacement reaction. One of products also dissociates and evolves carbon dioxide. Write the net ionic reaction including the proper use of phase labels for this solution run in

  4. science

    how to prepare 20% of Nitric acid from 70% of the Nitric acid solution

View more similar questions or ask a new question.