General Chemistry - Standalone book (MindTap Course List)
11th Edition
ISBN: 9781305580343
Author: Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Publisher: Cengage Learning
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Chapter 6, Problem 6.19QP
Interpretation Introduction
Interpretation:
The meaning of the standard enthalpy of formation of a substance has to be given.
To give: The meaning of the standard enthalpy of formation of a substance
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Chapter 6 Solutions
General Chemistry - Standalone book (MindTap Course List)
Ch. 6.1 - Prob. 6.1ECh. 6.1 - A solar-powered water pump has photovoltaic cells...Ch. 6.2 - A gas is enclosed in a system similar to that...Ch. 6.2 - Prob. 6.2CCCh. 6.3 - Ammonia burns in the presence of a platinum...Ch. 6.3 - Consider the combustion (burning) of methane, CH4,...Ch. 6.4 - A propellant for rockets is obtained by mixing the...Ch. 6.4 - a. Write the thermochemical equation for the...Ch. 6.4 - Prob. 6.3CCCh. 6.5 - How much heat evolves when 10.0 g of hydrazine...
Ch. 6.6 - Iron metal has a specific heat of 0.449 J/(g+ C)....Ch. 6.6 - Suppose 33 mL of 1.20 M HCl is added to 42 mL of a...Ch. 6.7 - Manganese metal can be obtained by reaction of...Ch. 6.7 - Prob. 6.4CCCh. 6.8 - Calculate the heat of vaporization, Hvap, of...Ch. 6.8 - Prob. 6.12ECh. 6.8 - Calculate the standard enthalpy change for the...Ch. 6 - Define energy, kinetic energy, potential energy,...Ch. 6 - Define the joule in terms of SI base units.Ch. 6 - Prob. 6.3QPCh. 6 - Describe the interconversions of potential and...Ch. 6 - Suppose heat flows into a vessel containing a gas....Ch. 6 - Define an exothermic reaction and an endothermic...Ch. 6 - Prob. 6.7QPCh. 6 - Under what condition is the enthalpy change equal...Ch. 6 - Prob. 6.9QPCh. 6 - Why is it important to give the states of the...Ch. 6 - If an equation for a reaction is doubled and then...Ch. 6 - Prob. 6.12QPCh. 6 - Prob. 6.13QPCh. 6 - Describe a simple calorimeter. What measurements...Ch. 6 - Prob. 6.15QPCh. 6 - You discover that you cannot carry out a...Ch. 6 - Prob. 6.17QPCh. 6 - Prob. 6.18QPCh. 6 - Prob. 6.19QPCh. 6 - Prob. 6.20QPCh. 6 - Is the following reaction the appropriate one to...Ch. 6 - Prob. 6.22QPCh. 6 - Prob. 6.23QPCh. 6 - Prob. 6.24QPCh. 6 - The equation for the combustion of 2 mol of butane...Ch. 6 - A 5.0-g sample of water starting at 60.0C loses...Ch. 6 - Hypothetical elements A2 and B2 react according to...Ch. 6 - Consider the following specific heats of metals....Ch. 6 - Thermal Interactions Part 1: In an insulated...Ch. 6 - Enthalpy a A 100.-g sample of water is placed in...Ch. 6 - Chemical reactions are run in each of the beakers...Ch. 6 - Shown below is a diagram depicting the enthalpy...Ch. 6 - A small car is traveling at twice the speed of a...Ch. 6 - The equation for the combustion of butane, C4H10,...Ch. 6 - A 250-g sample of water at 20.0C is placed in a...Ch. 6 - A 20.0-g block of iron at 50.0C and a 20.0 g block...Ch. 6 - Prob. 6.37QPCh. 6 - A block of aluminum and a block of iron, both...Ch. 6 - You have two samples of different metals, metal A...Ch. 6 - Consider the reactions of silver metal, Ag(s),...Ch. 6 - Prob. 6.41QPCh. 6 - A soluble salt, MX2, is added to water in a...Ch. 6 - Methane, CH4, is a major component of marsh gas....Ch. 6 - Hydrogen sulfide, H2S, is produced during...Ch. 6 - Prob. 6.45QPCh. 6 - Prob. 6.46QPCh. 6 - Chlorine dioxide, ClO2, is a reddish yellow gas...Ch. 6 - Nitrous oxide, N2O, has been used as a dental...Ch. 6 - A gas is cooled and loses 82 J of heat. The gas...Ch. 6 - An ideal gas expands isothermally (at constant...Ch. 6 - The process of dissolving ammonium nitrate,...Ch. 6 - The decomposition of ozone, O3, to oxygen, O2, is...Ch. 6 - Nitric acid, a source of many nitrogen compounds,...Ch. 6 - Hydrogen cyanide is used in the manufacture of...Ch. 6 - What is U when 1.00 mol of liquid water vaporizes...Ch. 6 - What is U for the following reaction at 25C?...Ch. 6 - When 1 mol of iron metal reacts with hydrochloric...Ch. 6 - When 2 mol of potassium chlorate crystals...Ch. 6 - When white phosphorus burns in air, it produces...Ch. 6 - Carbon disulfide burns in air, producing carbon...Ch. 6 - Phosphoric acid, H3PO4, can be prepared by the...Ch. 6 - With a platinum catalyst, ammonia will burn in...Ch. 6 - Colorless nitric oxide, NO, combines with oxygen...Ch. 6 - Hydrogen, H2, is used as a rocket fuel. The...Ch. 6 - Ammonia burns in the presence of a copper catalyst...Ch. 6 - Hydrogen sulfide, H2S, is a foul-smelling gas. It...Ch. 6 - Propane, C3H8, is a common fuel gas. Use the...Ch. 6 - Ethanol, C2H5OH, is mixed with gasoline and sold...Ch. 6 - You wish to heat water to make coffee. How much...Ch. 6 - An iron skillet weighing 1.63 kg is heated on a...Ch. 6 - When steam condenses to liquid water, 2.26 kJ of...Ch. 6 - When ice at 0C melts to liquid water at 0C, it...Ch. 6 - When 15.3 g of sodium nitrate, NaNO3, was...Ch. 6 - When 23.6 g of calcium chloride, CaCl2, was...Ch. 6 - A sample of ethanol, C2H5OH, weighing 2.84 g was...Ch. 6 - A sample of benzene, C6H6, weighing 3.51 g was...Ch. 6 - Hydrazine, N2H4, is a colorless liquid used as a...Ch. 6 - Hydrogen peroxide, H2O2, is a colorless liquid...Ch. 6 - Ammonia will burn in the presence of a platinum...Ch. 6 - Hydrogen cyanide is a highly poisonous, volatile...Ch. 6 - Compounds with carboncarbon double bonds, such as...Ch. 6 - Acetic acid, CH3COOH, is contained in vinegar....Ch. 6 - The cooling effect of alcohol on the skin is due...Ch. 6 - Carbon tetrachloride, CCl4, is a liquid used as an...Ch. 6 - Hydrogen sulfide gas is a poisonous gas with the...Ch. 6 - Carbon disulfide is a colorless liquid. When pure,...Ch. 6 - Iron is obtained from iron ore by reduction with...Ch. 6 - The first step in the preparation of lead from its...Ch. 6 - Hydrogen chloride gas dissolves in water to form...Ch. 6 - Carbon dioxide from the atmosphere weathers, or...Ch. 6 - The Group 2A carbonates decompose when heated. For...Ch. 6 - The Group 2A carbonates decompose when heated. For...Ch. 6 - Prob. 6.93QPCh. 6 - Prob. 6.94QPCh. 6 - Liquid hydrogen peroxide has been used as a...Ch. 6 - Hydrogen is an ideal fuel in many respects; for...Ch. 6 - Niagara Falls has a height of 167 ft (American...Ch. 6 - Prob. 6.98QPCh. 6 - When calcium carbonate, CaCO3 (the major...Ch. 6 - Calcium oxide (quicklime) reacts with water to...Ch. 6 - Formic acid, HCHO2, was first discovered in ants...Ch. 6 - Acetic acid, HC2H3O2, is the sour constituent of...Ch. 6 - Suppose you mix 19.8 g of water at 80.0C with 54.7...Ch. 6 - Suppose you mix 23.6 g of water at 66.2C with 45.4...Ch. 6 - A piece of lead of mass 121.6 g was heated by an...Ch. 6 - The specific heat of copper metal was determined...Ch. 6 - A 44.3 g sample of water at 100.00C was placed in...Ch. 6 - A 19.6-g sample of a metal was heated to 61.67C....Ch. 6 - A 21.3-mL sample of 0.977 M NaOH is mixed with...Ch. 6 - A 29.1-mL sample of 1.05 M KOH is mixed with 20.9...Ch. 6 - In a calorimetric experiment, 6.48 g of lithium...Ch. 6 - When 21.45 g of potassium nitrate, KNO3, was...Ch. 6 - A 10.00-g sample of acetic acid, HC2H3O2, was...Ch. 6 - The sugar arabinose, C5H10O5, is burned completely...Ch. 6 - Hydrogen sulfide, H2S, is a poisonous gas with the...Ch. 6 - Ethylene glycol, HOCH2CH2OH, is used as...Ch. 6 - Hydrogen, H2, is prepared by steam reforming, in...Ch. 6 - Hydrogen is prepared from natural gas (mainly...Ch. 6 - Calcium oxide, CaO, is prepared by heating calcium...Ch. 6 - Sodium carbonate, Na2CO3, is used to manufacture...Ch. 6 - Calculate the heat released when 2,395 L O2 with a...Ch. 6 - Prob. 6.122QPCh. 6 - Sucrose, C12H22O11, is common table sugar. The...Ch. 6 - Prob. 6.124QPCh. 6 - Ammonium nitrate is an oxidizing agent and can...Ch. 6 - Prob. 6.126QPCh. 6 - Prob. 6.127QPCh. 6 - Prob. 6.128QPCh. 6 - Prob. 6.129QPCh. 6 - Prob. 6.130QPCh. 6 - Prob. 6.131QPCh. 6 - Prob. 6.132QPCh. 6 - Dry ice is solid carbon dioxide; it vaporizes at...Ch. 6 - Prob. 6.134QPCh. 6 - Prob. 6.135QPCh. 6 - Sulfur dioxide gas reacts with oxygen, O2(g), to...Ch. 6 - When solid iron burns in oxygen gas (at constant...Ch. 6 - Calculate the grams of oxygen gas required to...Ch. 6 - Hydrogen is burned in oxygen to release heat (see...Ch. 6 - Prob. 6.140QPCh. 6 - Prob. 6.141QPCh. 6 - Prob. 6.142QPCh. 6 - You heat 1.000 quart of water from 25.0C to its...Ch. 6 - A piece of iron was heated to 95.4C and dropped...Ch. 6 - The enthalpy of combustion, H, for benzoic acid,...Ch. 6 - Given the following (hypothetical) thermochemical...Ch. 6 - The head of a strike anywhere match contains...Ch. 6 - Toluene C6H5CH3, has an enthalpy of combustion of...Ch. 6 - What will be the final temperature of a mixture...Ch. 6 - What will be the final temperature of a mixture...Ch. 6 - Graphite is burned in oxygen to give carbon...Ch. 6 - A sample of natural gas is 80.0% CH4 and 20.0%...Ch. 6 - Prob. 6.153QPCh. 6 - Prob. 6.154QPCh. 6 - How much heat is released when a mixture...Ch. 6 - How much heat is released when a mixture...Ch. 6 - Consider the Haber process:...Ch. 6 - An industrial process for manufacturing sulfuric...Ch. 6 - The carbon dioxide exhaled in the breath of...Ch. 6 - A rebreathing gas mask contains potassium...Ch. 6 - Prob. 6.161QP
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- When 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_forwardWhat 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_forwardUnder what circumstances is the heat of a process equal to the enthalpy change for the process?arrow_forward
- Given the following reactions, N2H4(l)+O2(g)N2(g)+2H2O(g)H=534.2kJ H2(g)+12 O2(g)H2O(g)H=241.8kJ Calculate the heat of formation of hydrazine.arrow_forwardCompounds with carboncarbon double bonds, such as ethylene, C2H4, add hydrogen in a reaction called hydrogenation. C2H4(g)+H2(g)C2H6(g) Calculate the enthalpy change for this reaction, using the following combustion data: C2H4(g)+3O2(g)2CO2(g)+2H2O(l);H=1411kJC2H6(g)+72O2(g)2CO2(g)+3H2O(l);H=1560kJH2(g)+12O2(g)H2O(l);H=286kJarrow_forwardThe first step in the preparation of lead from its ore (galena, PbS) consists of roasting the ore. PbS(s)+32O2(g)SO2(g)+PbO(s) Calculate the standard enthalpy change for this reaction, using enthalpies of formation (see Appendix C).arrow_forward
- Is the following reaction the appropriate one to use in determining the enthalpy of formation of methane, CH4(g)? Why or why not? C(g)+4H(g)CH4(g)arrow_forwardUsing the data in Appendix G, calculate the standard enthalpy change for each of the following reactions: (a) Si(s)+2F2(g)SiF4(g) (b) 2C(s)+2H2(g)+O2(g)CH3CO2H(l) (c) CH4(g)+N2(g)HCN(g)+NH3(g) ; (d) CS2(g)+3Cl2(g)CCl4(g)+S2Cl2(g)arrow_forwardIn the process of isolating iron from its ores, carbon monoxide reacts with iron(III) oxide, as described by the following equation: Fe2O3(s)+3CO(g)2Fe(s)+3CO2(g)H=24.8kJ The enthalpy change for the combustion of carbon monoxide is 2CO(g)+O2(g)2CO2(g)H=566kJ Use this information to calculate the enthalpy change for the equation 4Fe(s)+3O2(g)2Fe2O3(s)H=?arrow_forward
- You discover that you cannot carry out a particular reaction for which you would like the enthalpy change. Does this mean that you will be unable to obtain this enthalpy change? Explain.arrow_forwardGive the definition of the standard enthalpy of formation for a substance. Write separate reactions for the formation of NaCl, H2O , C6H12O6, and PbSO4 that have H values equal to Hf for each compound.arrow_forwardThe enthalpy change for the following reaction is 393.5 kJ. C(s,graphite)+O2(g)CO2(g) (a) Is energy released from or absorbed by the system in this reaction? (b) What quantities of reactants and products are assumed? (c) Predict the enthalpy change observed when 3.00 g carbon burns in an excess of oxygen.arrow_forward
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