Correct answer is "A"
on 8 wered ked out of Calculate the standard entropy changes for the following processes. Combustion...
11. Use the data given to calculate the entropy and enthalpy changes for the combustion (burning in the presence of oxygen) of 1 mole of CoHat 25°C to form carbon dioxide (gas) and water vapor Calculate A Hºrxn, AS rxn, and AGºrxn and determine if the combustion is spontaneous or non-spontaneous Chemical Species H2O (9) Entropy (J/moleK) 188.8 173.4 213.8 205.2 Enthalpy (kJ/mole) -241.8 49.1 -393.5 C6H6 (1) CO2(9) O2 11_CH. (1) + |__7.5__02 (3) 6 CO2(g) + _3_H208) 11.11...
A combustion reaction is describes as a carbon source reacting with oxygen and producing carbon dioxide and water. A common example of this reaction is methane reacting with oxygen gas in the following reaction: CH4(g) + 2O2 (g) yields CO2 (g) + 2H2O (g) What would the standard entropy change be, if 20 g of methane reacted with 20 g of oxygen? Answer: -1.626 J K-1
Question 17 Incorrect Mark 0.00 out of 1.00 Flag question Calculate the increase of entropy (in J/K) when 76 g of ice melts at 0 °C and 1 atm. (The heat of fusion for ice is 6,000 J/mol.) Answer: 208.4 Question 18 Incorrect Mark 0.00 out of 1.00 Calculate the change in entropy (in J/K) when 29.1 g of water is heated from 27.1 °C to 76.5 °C at 1 atm. (The specific heat is 4.184 J/(g-K).) Flag question Notice...
Calculate the standard reaction entropy for the combustion of methane to carbon dioxide and liquid water at 25 C S methane) 186.26 Jmol " ' K-1 2(C02) = 213.74 JmolK S(02) = 205.14 Jmol~K-1 oCH20) = 69.91 Jmol K
The combustion of ethene in the presence of excess oxygen yields carbon dioxide and water: ΔS° values: C2H4(g) = 219.4J/K; O2 (g) = 205 J/K; CO2 (g) = 213.6 J/k; H2O (g) =69.91 J/K C2H4 (g) + 3O2 (g) --> 2CO2 (g) + 2H2O (l) This value of ΔS° for this reaction is _____ J/K mol A. -267.4 B. -140.9 C. -347.6 D. +347.6 E. +140.9
Balanced equation: CH4(g)+2O2(g)→CO2(g)+2H2O(g) Part B: What mass of carbon dioxide is produced from the complete combustion of 2.70×10−3 g of methane? Part C: What mass of water is produced from the complete combustion of 2.70×10−3 g of methane? PartD: What mass of oxygen is needed for the complete combustion of 2.70×10−3 g of methane?
Complete combustion of methane When methane (CH4) burns, it reacts with oxygen gas to produce carbon dioxide and water. The unbalanced equation for this reaction is CH4(g) + O2(g) → CO2 (g) + H2O(g) This type of reaction is referred to as a complete combustion reaction.Part C What mass of water is produced from the complete combustion of 8.90x10-3 g of methane? Express your answer with the appropriate units.
The following thermochemical equation is for the reaction of methane(g) with oxygen(g) to form carbon dioxide(g) and water(g). CH4(g) + 2O2(g) ---> CO2(g) + 2H2O(g) H = -802 kJ When 6.37 grams of methane(g) react with excess oxygen(g), ___ kJ of energy are _________(evolved or absorbed). Once you get the answer, would it be a negative number or a positive number?
Methane can react with water to form carbon dioxide and hydrogen according to the following equation: CH4(g) + 2H2O(g) ↔ CO2(g) + 4H2(g) Use the following thermodynamic data at 298 K to determine the temperature at which the reaction goes from being spontaneous to nonspontaneous. Substance CH4(g) H2O(g) CO2(g) H2(g) ΔHºf (kJ/mol) -74.87 -241.8 -393.5 0 ΔGºf (kJ/mol) -50.81 -228.6 -394.4 0 Sºf (J/Kmol) 186.1 188.8 213.7 130.7
You are in charge of a combustion furnace. The furnace is fed an air stream and a methane stream which is combusted to produce heat that is used to boil water and produce steam for your plant. The combustion of fuels using an air stream which contains nitrogen generally produces significant amounts of NO, compounds which are an air pollutant, so the exhaust gases must generally be removed through various processes. In this case, your furnace exhaust is passed through...