In the production of ethanol, sugar (glucose) is fermented into ethanol through the In this question...
A boiler burns a biofuel, which is a mixture of 91 % Cellulose (C6H1005) and 106 I6 Paracoumaryl alcohol (C9H1002) in mass. (a) Write down the stoichiometric combustion equation of this biofuel. [8 marks] (b) The biofuel and excessive air are supplied to the combustion chamber at 298 K. The measured adiabatic flame temperature of the combustion of the biofuel with excess air is 2225 K. Determine the percentage excess air of this combustion using the constant averaged specific heats:...
5. 20% A 2.4-L gasoline fuelled internal combustion engine produces a maximum power of 220 kW when the fuel is burned stoichiometrically with air. The thermal efficiency of the engine at this maximum power is 43%. Methanol (CH3OH) is to be used as an alternative biofuel for this engine. The stoichiometric air-fuel ratio for gasoline is 14.6. Assume a combustion efficiency of 98%. The lower heating values of gasoline and methanol are 44 MJ/kg and 20 MJ/kg, respectively. Consider the...
QUESTION 3 (25 MARKS In a power plant boiler, coal which has an ultimate analysis by mass of 39.25 percent C, 6.93 percent H2, 41.11 percent 02, 0.72 percent N2, 0.79 percent S, and 11.20 percent Ash (non-combustibles) is burned steadily with 40% excess air. Assuming the combustion process as complete and treating the air as dry air, determine: (a) The balanced combustion equation for the combustion process. [6 Marks] (6) The Air-Fuel ratio [6 Marks) (c) The heat transfer...
Consider a rocket engine using ethyl alcohol (ethanol), C2H,OH as fuel and oxygen, O2, as oxidizer. Ethyl alcohol and oxygen enter the chamber as, respectively, a liquid at temperature T,C2H5OH = T,-29 8.1 5 K and a gas at temperature to2 =-40°C. The combustion reaction is o.0 where Alco , Aco2 , M2 , 20 arethe mole fractions of the products. The table below shows the mole fractions of the combustion products and their average specific heats and heats of...
Problem #3 (50 pts) Liquid ethanol burns steadily with air supplied at 33 phase) exit at 1000 K. 1 atm. A dry molar analysis CO, 16.6%; N, 80.24%. Atomic weights Ignore kinetic and potential energy effects. (1) (12 pts) Write down the chemical reac uid ethanol (CH.OH) at 298K. 1 atm enters a combustion chamber and Pplied at 350K. 1 atm. The combustion products (with water in the gas molar analysis of the combustion products gives CO., 3.16%; omic weights...
T(N)=352 please I need the answer urgent Question 1 The following gas phase reaction produces ethanol (C2H5OH) by catalytic hydrogenation of acetaldehyde (CH3CHO). The reaction reaches equilibrium at a temperature of T= T(N) and a pressure of 3 bar: CH,CHO(g) + H, (g) C,H,OH (8) The reactive system initially contains 1.5 moles of Hydrogen (Ha) for each mole of acetaldehyde (CH3CHO). The mixture is assumed to be an ideal gas. T(N) is the temperature corresponding to the student number as...
12:47 1 Exit Question 1 0.5 pts When 34.8 g of sodium chloride is dissolved in water, 2.31 kJ of energy is absorbed. Is the enthalpy of dissolution of NaCl exothermic or endothermic? Endothermic Exothermic Question 2 0.5 pts What is the balanced thermochemical equation for the combustion of two moles of gaseous acetylene, C2H2, with oxygen to produce carbon dioxide and water vapor at 24.59°C given that 2512 kJ of heat is released at a constant pressure of 1.14...
Research Paper Criterion 1. The first draft paper should contain the following a DO NOT include a title page with the first draf (minimum 800 words), Insert name, class, ar right corner. The header will be removed to b. in text footnotes (citations) corresponding to With numerical citations, references should b repeated, do not give it number; rathe ams. In-text Chem 111 Lab Start to Name: Sufian Allah od Calelations Due Date: 11/22 Station Reaction tenergy. heat of wald ange,...
Methane gas is burned with 30 percent excess air. This fuel enters a steady- flow combustor at 0.8 atm and 25oC and is mixed with the air. The products of combustion leave this reactor at 0.8 atm and 1600 K. Determine the equilibrium composition of the products of combustion and the amount of heat released by this combustion in kJ/kmol methane. Use data from the tables CH 25°C CO2, H3O chamber NO. O2 N2 1600 K 30% excess air 25°C...
PREPARATION OF PHARMACEUTICALS - Fischer Esterification Reactions Q: Calculate the expected mass of both methyl salicylate and aspirin assuming 100% yield. EXPERIMENT7 PREPARATION OF PHARMACEUTICALS Fischer Esterification Reactions Almost 2500 years ago, physicians such as Hippocrates recommended that patients chew on the bark of the willow to alleviate pain. The active ingredient in willow bark was found to be salicin, a compound made of a molecule of salicyl alcohol bonded to a p-D-glucose molecule. In the stomach, the bond between...