Directions: While the majority component of air is nitrogen (N2), the gas is ver

Question

Directions: While the majority component of air is nitrogen (N2), the gas is very unreactive because of its stability due to the triple bonds that hold the nitrogen atoms together. Nitrogen gas is, therefore, relatively unavailable for chemical reactions. One of the few ways to "fix" nitrogen, making a nitrogen compound from the elemental nitrogen in the atmosphere, is the Haber process (aka Haber- Bosch process). In this reaction, nitrogen gas combines with hydrogen gas to yield ammonia. The enthalpy (AH) of this reaction is-92.22 kJ/mol. This process was discovered by the German chemist Fritz Haber in the early twentieth century. Through extensive experimentation, Haber found the conditions that would produce adequate yields (at a temperature of about 500°C and a pressure of about 200 atm). This process holds a significant importance today because of its application in the industrial pro duction of ammonia-based fertilizer. Idn

Explanation / Answer

2]

N2 + 3H2 ----> 2NH3 + Heat

3]

N2 + 3H2 -----> 2NH3

From the reaction

1 mole of N2 reacts with 3 moles of H2 and forms 2 moles of NH3

N2 : H2 : NH3 = 1 : 3 : 2

Moles of N2 = mass /Molar mass = 17.15 / 28 = 0.6125

Moles of H2 = 10.95 / 2 = 5.475

0.6125 moles of N2 reacts with ---> 3*0.6125 = 1.8375 moles of H2 (sufficient moles of H2 are available )

and produces 2*0.6125 = 1.225 moles of NH3

Mass of NH3 produced = Moles *Molarmass = 1.225*17 = 20.825 gms

4]

% yield = Actual yield*100 / Theoritical yield = 11.5*100 / 20.825 = 55.222 %

Related Questions

Navigate

• Browse (All)
• Browse D
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.