Principles of General Chemistry
3rd Edition
ISBN: 9780073402697
Author: SILBERBERG, Martin S.
Publisher: McGraw-Hill College
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Textbook Question
Chapter 6, Problem 6.16P
Write a balanced equaĂ¼on and draw an approximate enthalpy diagram for (a) combustion of 1 mol of liquid methanol
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Chapter 6 Solutions
Principles of General Chemistry
Ch. 6 - Prob. 6.1PCh. 6 - An adiabatic process is one that involves no heat...Ch. 6 - Name a common device used to accomplish each...Ch. 6 - Prob. 6.4PCh. 6 - A system receives 425 J of heat from and delivers...Ch. 6 - A system releases 255 cal of heat to the...Ch. 6 - Prob. 6.7PCh. 6 - Prob. 6.8PCh. 6 - The nutritional calorie (Calorie) is equivalent to...Ch. 6 - Classify the following processes as exothermic or...
Ch. 6 - Why can we measure only changes in enthalpy, not...Ch. 6 - Draw an enthalpy diagram for a general exothermic...Ch. 6 - Prob. 6.13PCh. 6 - Prob. 6.14PCh. 6 - Prob. 6.15PCh. 6 - Write a balanced equaĂ¼on and draw an approximate...Ch. 6 - Write a balanced equation and draw an approximate...Ch. 6 - The circles represent a phase change at constant...Ch. 6 - The scenes below represent a physical change...Ch. 6 - What data do you need to determine the specific...Ch. 6 - Is the specific heat capacity of a substance an...Ch. 6 - Find q when 22.0 g of water is heated from 25.0C...Ch. 6 - Prob. 6.23PCh. 6 - A 295-g aluminum engine part at an initial...Ch. 6 - A 27.7-g sample of the radiator coolant ethylene...Ch. 6 - Two iron bolts of equal mass-one at 100.C, the...Ch. 6 - Prob. 6.27PCh. 6 - When 155 mL of water at 26C is mixed with 75 mL of...Ch. 6 - Prob. 6.29PCh. 6 - Prob. 6.30PCh. 6 - Prob. 6.31PCh. 6 - When 25.0 mL of 0.500MH2SO4 is added to 25.0 mL of...Ch. 6 - Would you expect O2(g)20(g) to have a positive or...Ch. 6 - Is H positive or negative when 1 mol of water...Ch. 6 - Prob. 6.35PCh. 6 - Consider the following balanced thermochemical...Ch. 6 - When 1 mol of NO(g) forms from Its elements, 90.29...Ch. 6 - Prob. 6.38PCh. 6 - Liquid hydrogen peroxide, an oxidizing agent in...Ch. 6 - Prob. 6.40PCh. 6 - Most ethylene (C2H4), the starting material for...Ch. 6 - Prob. 6.42PCh. 6 - Prob. 6.43PCh. 6 - Calculate H for Ca(s)+12O2(g)+CO2(g)CaCO3(s) Given...Ch. 6 - Calculate H for 2NOCl(g)N2(g)+O2(g)+Cl2(g) given...Ch. 6 - Write the balanced overall equation (equation 3)...Ch. 6 - Write the balanced overall equation (equation 3)...Ch. 6 - Diamond and graphite are two crystalline forms of...Ch. 6 - Prob. 6.49PCh. 6 - Prob. 6.50PCh. 6 - Use Table 6.3 or Appendix B to write a balanced...Ch. 6 - Prob. 6.52PCh. 6 - Calculate Hrxno for each of the following:...Ch. 6 - Calculate Hrxno for each of the following:...Ch. 6 - Copper(I) oxide can be oxidized to copperr (II)...Ch. 6 - Prob. 6.56PCh. 6 - Nitroglycerine, C3H5(NO3)3(l), a powerful...Ch. 6 - The common lead-acid car battery produces a large...Ch. 6 - Stearic acid (C18H36O2) is a fatty acid, a...Ch. 6 - A ballonist begins a trip in a helium-filled...Ch. 6 - Prob. 6.61PCh. 6 - Prob. 6.62PCh. 6 - Prob. 6.63PCh. 6 - Prob. 6.64PCh. 6 - Four 50.-g sample of different liquids are placed...Ch. 6 - When simple sugars, called monosaccharides, link...Ch. 6 - Reaction of gaseous CIF with F2 yields liquid...Ch. 6 - Prob. 6.68PCh. 6 - When organic matter decomposes under oxygen-free...Ch. 6 - The heat of atomization (Hatomo) is the heat...Ch. 6 - Prob. 6.71PCh. 6 - Prob. 6.72PCh. 6 - An aqueous wastes stream with a maximum...Ch. 6 - Kerosene, a common space-heater fuel, is a mixture...Ch. 6 - Prob. 6.75PCh. 6 - Phosphorus pentachloride is used in the industrial...Ch. 6 - Prob. 6.77PCh. 6 - Silicon tetrachloride is produced annually on the...Ch. 6 - Prob. 6.79PCh. 6 - You want to determine Ho for the reaction...Ch. 6 - Prob. 6.81PCh. 6 - Prob. 6.82PCh. 6 - Liquid methanol (CH3OH) can be used as an...Ch. 6 - How much heat is released when 25.0 g of methane...
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- Natural gas companies in the United States use the therm as a unit of energy. One therm is 1105 BTU. (a) How many joules are in one therm? (1J=9.48104BTU) (b) When propane gas, C3H8, is burned in oxygen, CO2 and steam are produced. How many therms of energy are given off by 1.00 mol of propane gas?arrow_forwardWhen one mole of ethylene gas, C2H4, reacts with fluorine gas, hydrogen fluoride and carbon tetrafluoride gases are formed and 2496.7 kJ of heat are given off. What is Hf for CF4(g)?arrow_forwardWhen 2.50 g of methane burns in oxygen, 125 kJ of heat is produced. What is the enthalpy of combustion per mole of methane under these conditions?arrow_forward
- What mass of acetylene, C2H2(g), must be burned to produce 3420 kJ of heat, given that its enthalpy of combustion is 1301 kJ/mol? Compare this with the answer to Exercise 5.91 and determine which substance produces more heat per gram.arrow_forwardHydrogen sulfide, H2S, is produced during decomposition of organic matter. When 0.5000 mol H2S burns to produce SO2(g) and H2O(l), 281.0 kJ of heat is released. What is this heat in kilocalories?arrow_forwardA rebreathing gas mask contains potassium superoxide, KO2, which reacts with moisture in the breath to give oxygen. 4KO2(s)+2H2O(l)4KOH(s)+3O2(g) Estimate the grams of potassium superoxide required to supply a persons oxygen needs for one hour. Assume a person requires 1.00 102 kcal of energy for this time period. Further assume that this energy can be equated to the heat of combustion of a quantity of glucose, C6H12O6, to CO2(g) and H2O(l). From the amount of glucose required to give 1.00 102 kcal of heat, calculate the amount of oxygen consumed and hence the amount of KO2 required. The ff0 for glucose(s) is 1273 kJ/mol.arrow_forward
- How much heat is absorbed by a 44.7-g piece of leadwhen its temperature increases by 65.4°C?arrow_forwardChlorine dioxide, ClO2, is a reddish yellow gas used in bleaching paper pulp. The average speed of a ClO2 molecule at 25C is 306 m/s. What is the kinetic energy (in joules) of a ClO2 molecule moving at this speed?arrow_forwardGraphite is burned in oxygen to give carbon monoxide and carbon dioxide. If the product mixture is 33% CO and 67% CO2 by mass, what is the heat from the combustion of 1.00 g of graphite?arrow_forward
- Consider the following reaction in a vessel with a movable piston. R(g)+T(g)X(g)As the reaction takes place, the piston loses 1072 J of heat. The piston moves down and the surroundings do 549 J of work on the system. What is E?arrow_forwardIn a calorimetric experiment, 6.48 g of lithium hydroxide, LiOH, was dissolved in water. The temperature of the calorimeter rose from 25.00C to 36.66C. What is H for the solution process? LiOH(s)Li(aq)+OH(aq) The heat capacity of the calorimeter and its contents is 547 J/C.arrow_forwardThe equation for the fermentation of glucose to alcohol and carbon dioxide is: C6H12O6(aq) 2C2H5OH(aq) + 2CO2(g) The enthalpy change for the reaction is 67 kJ. Is this reaction exothermic or endothermic? Is energy, in the form of heat, absorbed or evolved as the reaction occurs?arrow_forward
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