EBK ELEMENTARY PRINCIPLES OF CHEMICAL P
4th Edition
ISBN: 9781119192107
Author: BULLARD
Publisher: JOHN WILEY+SONS,INC.-CONSIGNMENT
expand_more
expand_more
format_list_bulleted
Videos
Textbook Question
Chapter 9, Problem 9.77P
Methane is burned with 25% excess air in a continuous adiabatic reactor. The methane enters the reactor at 25°C and 1.10 atm at a rate of 550 L/s, and the entering air is at 150°C and 1.1 atm. Combustion in the reactor is complete, and the reactor effluent gas emerges at 1.05 atm.
- Calculate the temperature and the degrees of superheat of the reactor effluent. (Consider water to be the only condensable species in the effluent.)
- Suppose only 15% excess air is supplied. Without doing any additional calculations, state how the temperature and degrees of superheat of the reactor effluent would be affected [increase, decrease, remain the same, cannot tell without more information] and explain your reasoning. What risk is involved in lowering the percent excess air?
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Consider the combustion of one mole of methane gas:CH4(gas) + 2O2(gas) --> CO2 (gas) + 2H2O(gas).The system is at standard temperature (298 K) and pressure (105 Pa) both before and after the reaction.
1.) First imagine the process of converting a mole of methane into its elemental consituents (graphite and hydrogen gas). Use the data at the back of this book to find ΔH for this process.
2.) Now imagine forming a mole of CO2 and two moles of water vapor from their elemental constituents. Determine ΔH for this process.
Question: How much heat is given off during this reaction, assuming that no "other" forms of work are done?
Consider the combustion of one mole of methane gas:CH4(gas) + 2O2(gas) --> CO2 (gas) + 2H2O(gas).The system is at standard temperature (298 K) and pressure (105 Pa) both before and after the reaction.
1.) First imagine the process of converting a mole of methane into its elemental consituents (graphite and hydrogen gas). Use the data at the back of this book to find ΔH for this process.
2.) Now imagine forming a mole of CO2 and two moles of water vapor from their elemental constituents. Determine ΔH for this process.
Question: What is ΔH for the actual reaction in which methane and oxygen form carbon dioxide and water vapor directly? Explain.
1 mol propane (C3H8) and stoichiometric amount of oxygen (O2) needed to combust propane was preheated to 400 K. After combustion, the products released are at 1500 K. The combustion products are H2O(l) and CO2(g). With 100% conversion was achieved, estimate the total heat released.
Calculate the heat requirement for a reactor in combusting 1 mol of methane, CH4, with 25% excess air until the products reach a temperature of 1000 K. The reactants entered the reactor at 298.15 K and 100% conversion of methane is achieved. Assume air is approximately 21% O2 and 79% N2 and products are H2O(l) and CO2(g).
Hint for both #1 and #2 – Combustion products at 298 K is CO2(g) and H2O(l). If the exiting temperature is above 373.15 K, H2O will leave as H2O(g). Therefore, you should account for the phase change of H2O(l) to H2O(g).
Chapter 9 Solutions
EBK ELEMENTARY PRINCIPLES OF CHEMICAL P
Ch. 9 - The standard heat of the reaction...Ch. 9 - Prob. 9.2PCh. 9 - Prob. 9.3PCh. 9 - The standard heat of the reaction...Ch. 9 - Prob. 9.5PCh. 9 - Prob. 9.6PCh. 9 - Prob. 9.7PCh. 9 - Prob. 9.8PCh. 9 - The standard heat of combustion of gaseous ethane...Ch. 9 - The standard heat of combustion (AH°) of liquid...
Ch. 9 - Prob. 9.11PCh. 9 - Prob. 9.12PCh. 9 - In the production of many microelectronic devices,...Ch. 9 - Prob. 9.14PCh. 9 - Prob. 9.15PCh. 9 - Prob. 9.16PCh. 9 - Prob. 9.17PCh. 9 - Carbon monoxide at 25°C and steam at 150°C are fed...Ch. 9 - Prob. 9.19PCh. 9 - Prob. 9.20PCh. 9 - Ethyl alcohol (ethanol) can be produced by the...Ch. 9 - Prob. 9.22PCh. 9 - Prob. 9.23PCh. 9 - Prob. 9.24PCh. 9 - Formaldehyde is produced commercially by the...Ch. 9 - Prob. 9.26PCh. 9 - Prob. 9.27PCh. 9 - Prob. 9.28PCh. 9 - Prob. 9.29PCh. 9 - A gas mixture containing 85 mole% methane and the...Ch. 9 - Ethylene oxide is produced by the catalytic...Ch. 9 - Cumene (C6H5C3H7) is produced by reacting benzene...Ch. 9 - Ethylbenzene is converted to styrene in the...Ch. 9 - Prob. 9.34PCh. 9 - Prob. 9.35PCh. 9 - Prob. 9.36PCh. 9 - Prob. 9.37PCh. 9 - Coke can be converted into CO—a fuel gas—in the...Ch. 9 - Prob. 9.39PCh. 9 - Prob. 9.40PCh. 9 - Prob. 9.41PCh. 9 - The equilibrium constant for the ethane...Ch. 9 - You are checking the performance of a reactor in...Ch. 9 - Hydrogen is produced in the steam reforming of...Ch. 9 - Prob. 9.45PCh. 9 - Five cubic meters of a 1.00-molar aqueous sulfuric...Ch. 9 - Prob. 9.47PCh. 9 - Prob. 9.48PCh. 9 - Prob. 9.49PCh. 9 - Calcium chloride is a salt used in a number of...Ch. 9 - A dilute aqueous solution of sulfuric acid at 25°C...Ch. 9 - A 2.00 mole% sulfuric acid solution is neutralized...Ch. 9 - A 12.0-molar solution of sodium hydroxide (SG =...Ch. 9 - Citric acid (C6H8O7) is used in the preparation of...Ch. 9 - Ammonia scrubbing is one of many processes for...Ch. 9 - Various uses for nitric acid are given in Problem...Ch. 9 - A natural gas is analyzed and found to consist of...Ch. 9 - Prob. 9.58PCh. 9 - A fuel gas is known to contain methane, ethane,...Ch. 9 - A fuel gas containing 85.0 mole% methane and the...Ch. 9 - A mixture of air and a fine spray of gasoline at...Ch. 9 - The heating value of a fuel oil is to be measured...Ch. 9 - Methanol vapor is burned with excess air in a...Ch. 9 - Methane at 25°C is burned in a boiler furnace with...Ch. 9 - Methane is burned completely with 40% excess air....Ch. 9 - A gaseous fuel containing methane and ethane is...Ch. 9 - A coal contains 73.0 wt% C, 4.7% H (not including...Ch. 9 - A mixture of methane, ethane, and argon at 25°C is...Ch. 9 - Prob. 9.69PCh. 9 - Prob. 9.70PCh. 9 - Prob. 9.71PCh. 9 - A bituminous coal is burned with air in a boiler...Ch. 9 - Prob. 9.73PCh. 9 - A natural gas containing 82.0 mole% CH4and the...Ch. 9 - Prob. 9.75PCh. 9 - Liquid n-pentane at 25°C is burned with 30% excess...Ch. 9 - Methane is burned with 25% excess air in a...Ch. 9 - Methane and 30% excess air are to be fed to a...Ch. 9 - Prob. 9.79PCh. 9 - In Problem 9.79, the synthesis of methanol from...Ch. 9 - Natural gas that contains methane, ethane, and...Ch. 9 - Prob. 9.82PCh. 9 - The wastewater treatment plant at the Ossabaw...
Additional Science Textbook Solutions
Find more solutions based on key concepts
Find the Laplace transforms of the following functions, using the information in Table 3.1. (However, someof th...
Process Dynamics and Control, 4e
Falsified Kinetics. The irreversible gas-phase dimerization
is carried out at 8.2 atm in a stirred contained-s...
Elements of Chemical Reaction Engineering (5th Edition) (Prentice Hall International Series in the Physical and Chemical Engineering Sciences)
What is the difference between the size and the capacity of a vector?
Problem Solving with C++ (9th Edition)
What is a recursive functions base case?
Starting Out with C++ from Control Structures to Objects (9th Edition)
In this chapter, we use the metaphor of a blueprint and houses that are created from the blueprint to describe ...
Starting Out with Java: Early Objects (6th Edition)
A 1-k load needs 10 mA to operate correctly. Design a practical power source to provide the needed current. The...
ANALYSIS+DESIGN OF LINEAR CIRCUITS(LL)
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.Similar questions
- The n-butane is converted into isobutane in an isomerization reactor, which operates isothermally at 149°C. Suppose that the reactor is fed with a mixture containing 93% mole of n-butane, 5% isobutane and 2% HCl at 149°C and that a 40% conversion of n-butane is achieved. How much heat in KJ/m3 (STP) of the feed, should be supplied or extracted from the reactor?arrow_forwardA mixture of gaseous reactants is put in to a cylinder, where a chemical reaction turns them in to gaseous products. The cylinder has a piston that moves in or out as necessary to keep a constant pressure on the mixture of 1 atm. The cylinder is also submerged in a large insulated water bath. From previous experiments, this chemical reaction is known to release 211. kJ of energy. The temperature of the water bath is monitored, and it is determined from this data that 360. kJ of heat flows out of the system during the reaction. A) is the reaction exothermic or endothermic? B) Does the temperature of the water go up or down? C) does the piston move in, out, or neither? D)does The gas mixture do work, Or is work done on it? E)how much work is done on (or by) the gas mixture?arrow_forwardA mixture of gaseous reactants is put in to a cylinder, where a chemical reaction turns them in to gaseous products. The cylinder has a piston that moves in or out as necessary to keep a constant pressure on the mixture of 1 atm. The cylinder is also submerged in a large insulated water bath. From previous experiments, this chemical reaction is known to release 211. kJ of energy. The temperature of the water bath is monitored, and it is determined from this data that 360. kJ of heat flows out of the system during the reaction. A)does The gas mixture do work, Or is work done on it? B)how much work is done on (or by) the gas mixture?arrow_forward
- ethylene oxide is prepared by oxidation of ethylene. 100Kmol of ethylene and 100Kmol of O2 are charged to a reactor.The percent conversion of ethylene is 85 and percent yield of C2H4O is 94.12. Calculate the composition of product steam leaving the reactor .The reactions taking place are: C2H4+0.5O2=C2H4O C2H4+3O2= 2CO2+2H2Oarrow_forwardOxy-acetylene torches can be used to cut or weld metal. Oxygen and acetylene are fed from separate compressed gas cylinders through pressure regulators to the torch where they are mixed and combusted. To estimate the amount of metal that can be cut or welded per unit volume of gas, the composition of the gases produced by combustion and heat produced by the combustion reaction must be determined. For this problem: a. Define a closed system that can be used to calculate the heat produced b. Define an open system that can be used to calculate the heat produced c. List at least two intensive variables that are important in calculation d. List at least two extensive variables that are important in the calculationarrow_forwardPlease help me with my he. I can't seem to solve this problem. I hope you can help me This is a guide to answer the activity. HESS LAW (Law of Heat Summation) “The enthalpy change of the overall process is the sum of the enthalpy changes of the individual component steps.” - It is the standard enthalpy of Reaction, ΔHᵒ. - It can be illustrated in the following example Consider the following reactions: (a) Fe(s) + O2(g) à FeO(s)ΔHᵒ = -272 kJ (b) 2 Fe(s) + O2 (g) à Fe2O3(s)ΔHᵒ = -82.5 kJ 1. Make sure to write the balance equation. 2. The final equation requires 2 moles of FeO which means we will multiply equation (a) and its enthalpy change by 2. 3. Reverse equation (a), which means, the product goes to the reactant side, (2) (FeO(s) à Fe(s) + O2(g))ΔHᵒ = (-272 kJ)(2) = 544 kJ 2 FeO(s) à 2 Fe(s) + O2(g))ΔHᵒ = -825.5 kJ 4. Combine the final equation (a) and the initial equation (b). And then cancel the same components with same number of particles. In this…arrow_forward
- A mixture of gaseous reactants is put into a cylinder, where a chemical reaction turns then into gaseaous products. the cylinder has a piston that moves in or out, as necessary, to keep a constant pressure on the mixture of 1 atm. the cylinder is also submerged in a large insulated water bath. From previous experiments, this chemical reaction is known to release 173.kJ of energy. the temperature of the water bath is monitored, and it is determined from this data that 37.2kJ of heat flows out of the system during the reaction. Is the reaction exothermic or endothermic? Does the temperature of the water bath go up or down? Does the piston move in or out? Does the gas mixture do work, or is work done on it? How much work is done on (or by) the gas mixture? Round your answer to 3 significant digits.arrow_forwardThis was a lab I performed where we mix aqueous 25ml HCl and 25ml NaOH and use a program called microlab to determine the cooling rate after the initial heating. We used a coffee cup calorimeter that had a stirring bar. At first, NaOH solution is by itself in the coffee cup calorimeter. It’s temperature was 23.02 C. I waited for 70 seconds and then added the 25ml of HCl to it. The temperature rose to 29.59 C, then began to cool down immediately. The cooling rate was y=0.0089x+26.1273 according to the program. The final weight of the solution was 47.147g. The moles of NaOH was 0.919M and HCl was 1.033M. The question: Using the volumes and concentrations of the HCl and NaOH solutions used in the experiment,calculate the moles of H2O formed in the neutralization reaction.arrow_forwardA geochemist in the field takes a 9.0 mL sample of water from a rock pool lined with crystals of a certain mineral compound X. He notes the temperature of the pool, 15. C, and caps the sample carefully. Back in the lab, the geochemist first dilutes the sample with distilled water to 400. mL.. Then he filters and evaporates all the water under vacuum. Crystals of X are left behind. The researcher washes, dries and weighs the crystals. They weigh 0.045 g. Using only the information above, can you calculate the solubility of Xin water at 15.° C7 If you said yes, calculate it. Be sure your answer has a unit symbol and 2 significant digits. yes O no 0 0.9 H ロ･ロ X 0 Garrow_forward
- Methane (CH4) burns completely with 100% excess air in a steady-flow combustion process. Those entering and leaving the combustion process are at 25 C temperature and 1 atmosphere pressure, and the water between the end products of combustion is in the liquid phase. Calculate the heat transfer during the combustion process.arrow_forwardThe synthesis of methanol from carbon monoxide and hydrogen is carried out in a continuous vapor-phase reactor at 5.00 atm absolute. The feed contains cO and H2 in stoichiometric proportion and enters the reactor at 25.0°C and 5.00 atm at a rate of 31.1 m³/h. The product stream emerges from the reactor at 157°C. The rate of heat transfer from the reactor is 21.0 kW. Calculate the fractional conversion (0 to 1) of carbon monoxide achieved and the volumetric flow rate (m3/h) of the product stream. f = Vout ! m3/harrow_forwardGasoline having a chemical formula C3H17 is burned in an engine at a fuel-air equivalence ratio ø=1.19 and a temperature of 1000K. a) Write the stoichiometric combustion equation of the fuel; b) Write the reaction equation corresponding to the given fuel-air equivalence ratio.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
ChemistryChemistryISBN:9781305957404Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCostePublisher:Cengage Learning
ChemistryChemistryISBN:9781259911156Author:Raymond Chang Dr., Jason Overby ProfessorPublisher:McGraw-Hill Education
Principles of Instrumental AnalysisChemistryISBN:9781305577213Author:Douglas A. Skoog, F. James Holler, Stanley R. CrouchPublisher:Cengage Learning
Organic ChemistryChemistryISBN:9780078021558Author:Janice Gorzynski Smith Dr.Publisher:McGraw-Hill Education
Chemistry: Principles and ReactionsChemistryISBN:9781305079373Author:William L. Masterton, Cecile N. HurleyPublisher:Cengage Learning
Elementary Principles of Chemical Processes, Bind...ChemistryISBN:9781118431221Author:Richard M. Felder, Ronald W. Rousseau, Lisa G. BullardPublisher:WILEY
Chemistry
Chemistry
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Cengage Learning
Chemistry
Chemistry
ISBN:9781259911156
Author:Raymond Chang Dr., Jason Overby Professor
Publisher:McGraw-Hill Education
Principles of Instrumental Analysis
Chemistry
ISBN:9781305577213
Author:Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:Cengage Learning
Organic Chemistry
Chemistry
ISBN:9780078021558
Author:Janice Gorzynski Smith Dr.
Publisher:McGraw-Hill Education
Chemistry: Principles and Reactions
Chemistry
ISBN:9781305079373
Author:William L. Masterton, Cecile N. Hurley
Publisher:Cengage Learning
Elementary Principles of Chemical Processes, Bind...
Chemistry
ISBN:9781118431221
Author:Richard M. Felder, Ronald W. Rousseau, Lisa G. Bullard
Publisher:WILEY
Mod-01 Lec-23 Degrees of freedom analysis; Author: nptelhrd;https://www.youtube.com/watch?v=c4h85JjrkzQ;License: Standard YouTube License, CC-BY
Introduction to Degrees of Freedom; Author: LearnChemE;https://www.youtube.com/watch?v=tW1ft4y5fQY;License: Standard Youtube License