Calculate the mixture fraction at stoichiometric condition

Reference no: EM131261830

Q1. Below is a graph showing the moles of product produced when burning benzene (C₆H₆) in air as a function of % theoretical air. This graph was generated based on the equilibrium reactions discussed. Please answer the following questions related to the graph:

a) Why are the moles of CO and O₂ at 100% theoretical air (x = 1) above zero? Recall that 100% theoretical air is the stoichiometric condition.

b) Why do the moles of CO go to zero (approximately) at 160% theoretical air (x = 1.6)? If appropriate explain the difference with part a.

c) Why are the moles of CO and 112 larger at 80% theoretical air (x = 0.8) compared to 100% theoretical air?

Q2. If liquid benzene spills on a lab table that has an open flame, will it catch on fire? The table is at -30°C and cools the benzene to this temperature. Quantitatively explain your answer. Also, what does your mathematical model physically represent? Use the following information to answer the question:

Q3. A stoichiontetric mixture of benzene and air at T₁ = 300 K. P₁ = 100 kPa, and V₁ = 5 liters (0,005 m³) is compressed in a piston-cylinder assembly in a polytropic process where n = 1.2. If the final pressure is 5000 kPa, will the mixture autoignite? The autoignition temperature for benzene is 771 K. Also, calculate the work in kJ and the heat transfer in kJ required to raise the mixture pressure to 5000 kPa. Use the information below in answering the questions:

Universal gas constant: R_U = 8.314 kJ/kmolK

(C_{v,C_6H_6})^- = 126.6 kJ /kmolK,

(C_v,air) = 21.27 kJ/kmolK,

Q4. Benzene (C₆H₄) is burned in air. You may assume the mass fraction of oxygen in air is 0.23 and the rest of the oxidizer stream is nitrogen. Answer the following:

a) Calculate the mixture fraction at stoichiometric condition.

b) Calculate the mixture fraction of the products at the stoichiometric mixture fraction.

c) Plot the mass fractions of the reactants and products versus mixture fraction.

d) What are the mass fractions of products and reactants at a mixture fraction of 0.5?

Reference no: EM131261830

Questions Cloud

Discuss the key cultural factors starbucks had to consider : Many of the same environmental factors, such as cultural factors, that operate in the domestic market also exist internationally. Discuss the key cultural factors Starbucks had to consider as it expanded into China.

Provide quality supporting sources to illustrate the value : Write a 700- to 1,050-word paper rebutting the justice's concerns about the competencies of human service workers. Provide quality supporting sources to illustrate the value that human service workers provide the criminal justice system.

Provide plots of the impulse and the log-magnitude responses : Determine the coefficients of the FIR filter that has 0.5 dB ripple in the passband and 50 dB attenuation in the stopband. Choose reasonable values for the band-edge frequencies.

Should other companies imitate the emphasis method : Should other companies imitate the emphasis Method gives to certain factors in its external environment? Why or why not?

Calculate the mixture fraction at stoichiometric condition : Benzene (C6H4) is burned in air. You may assume the mass fraction of oxygen in air is 0.23 and the rest of the oxidizer stream is nitrogen. Answer the following: Calculate the mixture fraction at stoichiometric condition

Explain how this relationship may affect police practices : Describe the impact of Sir Robert Peel on American policing. Analyze the relationship between the U.S. government and the policing organizations throughout the United States. Explain how this relationship may affect police practices.

Discuss the importance of global marketing : Discuss the importance of global marketing. - What is meant by "having a global vision"? Why is it important? - Discuss jobs outsourcing. Is it beneficial to U.S. firms?

What foreign governments do to make them more beneficial : Do you believe that multinationals are beneficial or harmful to developing nations? Why? What could foreign governments do to make them more beneficial?

What are the values of the lift and drag coefficients : Suppose that the aircraft is to be in steady longitudinal flight at a stall flight condition. What are the values of the lift and drag coefficients? What is the elevator deflection required to keep the aircraft in steady flight at this stall fligh..

User Account

All Pages