tab=-lockfnesc14→CAssignments-2022 Fall Term (1) XAcetylene and oxygen react to form carbon dioxide and water, like this:2C₂H₂(g) +50₂(g) 4CO₂(g) + 2H₂O(g)O ADVANCED GENERAL CHEMISTRYUsing Le Chatelier's Principle to predict the result of changing...Suppose a mixture of C₂H₂, O₂, CO₂ and H₂O has come to equilibrium in a closed reaction vessel. Predict what change, if any, the perturbations in the tablebelow will cause in the composition of the mixture in the vessel. Also decide whether the equilibrium shifts to the right or left.perturbation4Some C₂H₂ is removed.Some CO₂ is added.Explanation146°FMostly cloudy+https://www-awu.aleks.com/alekscgi/x/Isl.exe/10_u-IgNslkr7j8P3jH-IBMBkpcnaFu0F7UjsroJMKrbFHXPNvwILIE9xQia_u6lCg8... A"2?1QAN@-2Check("* ("*WSXaltThe pressure of O₂ willThe pressure of CO₂ willH#ALEKS - Chisom Obidiegwu - Le XThe pressure of C₂H₂ will ?The pressure of O, will ?3LUEchange in compositionDQ Search$Cby4RFLL?0?%405VTGvvVVA6shift in equilibriumxto the rightO to the leftO (none)O to the rightOto the leftO (none)Y4+&H7S144**冰U기83.1B N MDI(Ⓒ2022 McGraw Hill LLC. All Rights Reserved. Terms of Use | Privacy CenterW9KDDIO▬▬▬▬▬▬▬OLOPha1/5insert=prt sc←✩ €[JE]40pause1ChisoOLbackspaceAAccessibil7:17 PM11/27/2022

According to Le Chateliar principle if a system is in equilibrium is subjected to change of…

Using Le Chatelier's Principle Acetylene and oxygen react to form carbon dioxide and water, like this: 2C₂H₂(g)+50₂(g) 4CO₂(g)+2H₂O(g) Suppose a mixture of C₂H₂, O₂, CO₂ and H₂O has come to equilibrium in a closed reaction vessel. Predict what change, if any, the perturbations in the table below will cause in the composition of the mixture in the vessel. Also decide whether the equilibrium shifts to the right or left. perturbation 4 Some C₂H₂ is removed. Some CO₂ is added. Explanation 4 46°F Mostly cloudy change in composition The pressure of O₂ will The pressure of CO₂ will The pressure of C₂H₂ will The pressure of O₂ will Check Q Search ? ? ? ? V shift in equilibrium X to the right O to the left O (none) O to the right Oto the left O (none) 5 0 E Ⓒ2022 McGraw Hill LLC. All Rights Reserved. Terms of Use | Privacy Center | Accessibil 7:17 PM 11/27/2022

Using Le Chatelier's Principle Acetylene and oxygen react to form carbon dioxide and water, like this: 2C₂H₂(g)+50₂(g) 4CO₂(g)+2H₂O(g) Suppose a mixture of C₂H₂, O₂, CO₂ and H₂O has come to equilibrium in a closed reaction vessel. Predict what change, if any, the perturbations in the table below will cause in the composition of the mixture in the vessel. Also decide whether the equilibrium shifts to the right or left. perturbation 4 Some C₂H₂ is removed. Some CO₂ is added. Explanation 4 46°F Mostly cloudy change in composition The pressure of O₂ will The pressure of CO₂ will The pressure of C₂H₂ will The pressure of O₂ will Check Q Search ? ? ? ? V shift in equilibrium X to the right O to the left O (none) O to the right Oto the left O (none) 5 0 E Ⓒ2022 McGraw Hill LLC. All Rights Reserved. Terms of Use | Privacy Center | Accessibil 7:17 PM 11/27/2022

Chemistry: The Molecular Science

5th Edition

ISBN:9781285199047

Author:John W. Moore, Conrad L. Stanitski

Publisher:John W. Moore, Conrad L. Stanitski

Chapter12: Chemical Equilibrium

Section: Chapter Questions

Problem 121QRT: When a mixture of hydrogen and bromine is maintained at normal atmospheric pressure and heated above...

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When a mixture of hydrogen and bromine is maintained at normal atmospheric pressure and heated above 200. °C in a closed container, the hydrogen and bromine react to form hydrogen bromide and a gas-phase equilibrium is established. Write a balanced chemical equation for the equilibrium reaction. Use bond enthalpies from Table 6.2 ( Sec. 6-6b) to estimate the enthalpy change for the reaction. Based on your answers to parts (a) and (b), which is more important in determining the position of this equilibrium, the entropy effect or the energy effect? In which direction will the equilibrium shift as the temperature increases above 200. °C? Explain. Suppose that the pressure were increased to triple its initial value. In which direction would the equilibrium shift? Why is the equilibrium not established at room temperature?
9.20 State the first law of thermodynamics briefly in your own words.
Calculate H for each of the following reactions using the data in Appendix 4: 4Na(s)+O2(g)2Na2O(s)2Na(s)+2H2O(l)2NaOH(aq)+H2(g)2Na(s)+CO2(g)Na2O(s)+CO(g) Explain why a water or carbon dioxide fire extinguisher might not be effective in putting out a sodium fire.
9.83 A student performing a calorimetry experiment combined 100.0 mL of 0.50 M HCl and 100.0 mL of 0.50 M NaOH in a coffee cup calorimeter. Both solutions were initially at 20.0°C, but when the two were mixed, the temperature rose to 23.2°C. (a) Suppose the experiment is repeated in the same calorimeter but this time using 200 mL of 0.50 M HCl and 200.0 mL of 0.50 M NaOH. Will the T observed he greater than, less than, or equal to that in the first experiment, and why? (b) Suppose that the experiment is repeated once again in the same calorimeter, this time using 100 mL of 1.00 M HCl and 100.0 mL of 1.00 M NaOH. Will the T observed he greater than, less than, or equal to that in the first experiment, and why?
9.61 Silane, SiH4, burns according to the reaction, SiH4+2O2SiO2+2H2O , with H=1429 kJ. How much energy is released if 15.7 g of silane is burned?
The combustion of methane, is an exothermic process. Therefore, the products of this reaction must possess (higher/ lower) total potential energy than do the reactants.
9.36 Define the term calibration.
Some automobiles and buses have been equipped to bum propane (C3H8). Compare the amounts of energy that can be obtained per gram of C3H8(g) and per gram of gasoline, assuming that gasoline is pure octane, C8H18(l). (See Example 7-11.) Look up the boiling point of propane. What disadvantages are there to using propane instead of gasoline as a fuel?
The decomposition of ozone, O3, to oxygen, O2, is an exothermic reaction. What is the sign of q? If you were to touch a flask in which ozone is decomposing to oxygen, would you expect the flask to feel warm or cool?
Explain in your own words what is meant by the term entropy. Explain how both matter spread and energy spread are related to the concept of entropy.
Would the amount of heat absorbed by the dissolution in Example 5.6 appear greater, lesser, or remain the same if the experimenter used a calorimeter that was a poorer insulator than a coffee cup calorimeter? Explain your answer.
Which sentence best describes the following reaction? 2H2(g)+O2(g)2H2O(l)+heat a. It is an endothermic reaction. b. It is an exothermic double-replacement reaction. c. It is a synthesis reaction that is also exothermic. d. It is a decomposition reaction that is also endothermic.