EBK PHYSICAL CHEMISTRY
2nd Edition
ISBN: 8220100477560
Author: Ball
Publisher: Cengage Learning US
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Textbook Question
Chapter 2, Problem 2.55E
Why is equation 2.37 written in terms of CV and Cp and not
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For H2(g)+Br2(g)↽−−⇀2HBr(g),H2(g)+Br2(g)↽−−⇀2HBr(g), ?=7.2×10−4K=7.2×10−4 at 1362 K and Δ?∘ΔH∘ is positive. A vessel is charged with 48.2 Pa48.2 Pa HBr,HBr, 1430 Pa1430 Pa H2,H2, and 3295 Pa3295 Pa Br2Br2 at 1362 K.
Will the reaction proceed to the left or right to reach equilibrium?
right
left
Calculate the pressure (in pascals) of each species at equilibrium.
?H2=
?Br2=
?HBr=
If the mixture is compressed to half of its original volume, will the reaction proceed to the left or the right to reestablish equilibrium?
left
neither
right
If the mixture is heated from 13621362 to 1421 K1421 K, will HBr be formed or consumed to reestablish equilibrium?
consumed
neither
formed
2. Give handwritten answer
7:53 PM Mon Nov 21
<
TOA
5.) A sample of 2.00 mol of a perfect gas is initially at a pressure of 111 kPa and temperature of
277 K. The sample is heated reversibly to 356 K at a constant volume. The constant volume
molar heat capacity is 2.5R. Calculate the final pressure, AU, q, and w.
n= 2.00 mol
AT= 356 K-277 K= 79 K
P= 111 kPa 1.11x 10³ Pa
Cp.m= 2.5R = 2.5.8.314 / mcl.k= 20.79 J/mol K
F
w=0
AU= q
Reversible pressure inside is same
as pressure outside
= m CSAT
@87%
q=
4
8
Chapter 2 Solutions
EBK PHYSICAL CHEMISTRY
Ch. 2 - Calculatethe work performed by a person whoexertsa...Ch. 2 - Explain inyour own words why work done by the...Ch. 2 - Calculate the work in joules when a piston moves...Ch. 2 - Calculatethe work on the system whena piston is...Ch. 2 - Calculatethe work in joules needed to expanda...Ch. 2 - Consider exercise 2.5. Would the workbe more or...Ch. 2 - Apistonhaving0.033 mol ofgas at 35.0Cexpands...Ch. 2 - A bottle of soda has a head space containing 25.0...Ch. 2 - Prob. 2.9ECh. 2 - Calculate the specific heat of a material if 288J...
Ch. 2 - There is 3930 J of energy added to a 79.8-g sample...Ch. 2 - If the heat capacity varies withtemperature,...Ch. 2 - Liquid hydrogen fluoride, liquid water,and liquid...Ch. 2 - A 5-mmdiameter hailstone has a terminal velocity...Ch. 2 - A7.50-gpiece of iron at 100.0C is dropped into...Ch. 2 - With reference to Joules apparatus inFigure2.6,...Ch. 2 - Prob. 2.17ECh. 2 - True or false: Althoughwork done bya free...Ch. 2 - What arethe differencesbetween an open, a closed,...Ch. 2 - The statement Energycan beneithercreatednor...Ch. 2 - Prob. 2.21ECh. 2 - What is the change in internal energy when a gas...Ch. 2 - Calculate the work for the isothermal, reversible...Ch. 2 - Calculate the work donewhen 1.000 mole of an ideal...Ch. 2 - Apistonhaving0.033 mol of gas at 35.0C expands...Ch. 2 - Prob. 2.26ECh. 2 - Indicate which state function is equal to heat, q,...Ch. 2 - The distance between downtown San Francisco and...Ch. 2 - Is temperature astate function?Defend your answer.Ch. 2 - A piston reversibly and adiabatically contracts...Ch. 2 - Calculate U when 1.00 mol of H2 goes from 1.00...Ch. 2 - Many compressed gases come in large,heavy metal...Ch. 2 - Under what conditions will U be exactly zero for a...Ch. 2 - Aballoon filled with 0.505 mole of gascontracts...Ch. 2 - A piston having 7.23 g of steam at 110 C increases...Ch. 2 - It takes 2260 J to vaporize a gram of liquid water...Ch. 2 - True or false: Any process for which H is negative...Ch. 2 - Prob. 2.38ECh. 2 - A refrigerator contains approximately 17cubic...Ch. 2 - In a constant-volume calorimeter, 35.0g of H2cools...Ch. 2 - A 2.50-mol sample of gas is compressed...Ch. 2 - A 244-g amount of coffee in an open plastic cup...Ch. 2 - Prob. 2.43ECh. 2 - Starting with equation 2.27 andthe original...Ch. 2 - Derive the fact that HpT is also zero for an ideal...Ch. 2 - Define isobaric,isochoric, isenthalpic,and...Ch. 2 - Starting from the cyclicrule involvingthe Joule-...Ch. 2 - The ideal gas law is theequation of state for an...Ch. 2 - Prob. 2.49ECh. 2 - Estimatethe final temperature of a mole of gas at...Ch. 2 - With regard to exercise 2.50, how accurate do you...Ch. 2 - Use the data in Table 2.2 to determine Hp T for Ar...Ch. 2 - Use the data in Table 2.2 to determine PH T for N2...Ch. 2 - Someone proposes thatthe Joule-Thomson coefficient...Ch. 2 - Why is equation2.37 written interms of CV and Cp...Ch. 2 - What are the numerical values of the heat...Ch. 2 - In a constant-pressure calorimeter that is, one...Ch. 2 - What is the finaltemperature of0.122 mole...Ch. 2 - Prob. 2.59ECh. 2 - Show that =5/3 for a monatomic ideal gas.Ch. 2 - Prob. 2.61ECh. 2 - Prob. 2.62ECh. 2 - A 1.00 mol sample of H2 is carefully warmed from...Ch. 2 - Asampleof a monatomic ideal gas doubles itsvolume...Ch. 2 - A sample of an ideal diatomic gas is compressed...Ch. 2 - In orbit about Earth, a weather balloonjettisons a...Ch. 2 - Prob. 2.67ECh. 2 - Prob. 2.68ECh. 2 - If pumping up an automobile tire is assumed to be...Ch. 2 - Prob. 2.70ECh. 2 - Take the volume change into account and calculate...Ch. 2 - How much work is performed by 1 mole of water...Ch. 2 - Why are steam burns so much worse than water burns...Ch. 2 - How many grams of water at 0C will be melted by...Ch. 2 - Draw a diagram like Figure 2.11 that illustrates...Ch. 2 - Determine the rxnH(25C) of the following reaction:...Ch. 2 - Determine rxnH 25 C for the following reaction: NO...Ch. 2 - The enthalpy of combustion of...Ch. 2 - The enthalpy of combustion of diamond is -395.4...Ch. 2 - Using Hesss law, writeout allof the formation...Ch. 2 - Sublimation is the phase change from solid to gas...Ch. 2 - The thermite reaction combines aluminum powder and...Ch. 2 - Benzoic acid, C6H5COOH, is a common standard used...Ch. 2 - Assume that 1.20 g of benzoicacid, C6H5COOH, is...Ch. 2 - Natural gas is mostly CH4. When it burns, the...Ch. 2 - Assuming constant heatcapacities for products and...Ch. 2 - Use the heat capacities of the products and...Ch. 2 - The following are values of heat capacity for...Ch. 2 - Prob. 2.89ECh. 2 - Prob. 2.90ECh. 2 - The Dieterici equation of state for one mole of...Ch. 2 - Prob. 2.92ECh. 2 - Find the enthalpies of the combustion reactions...
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- Given these relation, prove this without usin Maxwell relatios as - ( ), aV ӘT JP/T Parrow_forwardP4.12aarrow_forward5.) 1.00 mol of N2 is adiabatically expanded from 10.00 L at 400 K to 20.00 L. Assume that Cv,m= SR/2 for nitrogen. A) What is the final temperature if the expansion is carried out against a constant pressure of 1.00 atm? B) What is the final temperature if the expansion is carried out reversibly? C) What is the final temperature if the expansion is carried out into a vacuum?arrow_forward
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- What are the values of q, w, AU, AH, AS, ASsurr, and ASuniv for the following a constant pressure process for a system containing 0.356 moles of CH3OH ? CH3OH(I, 22.0 °C, 1.00 atm) → CH3OH(g, 125.0 °C, 1.00 atm) Assume that the volume of CH3OH(I) is much less than that of CH3OH(g) and that CH3OH(g) behaves as an ideal gas. Also, assume that the temperature of the surroundings is 125.0 °C. Data: Molar heat capacity for CH3OH(I), Cp,m = 81.1 J K¯¹ mol-¹ Molar heat capacity for CH3OH(g), Cp,m = 44.1 J K¯¹ mol-¹ Enthalpy of vaporization, AvapH = 35.2 kJ mol-¹ at 64.7 °C and 1.00 atm Enter answers that are accurate to three (3) or more significant figures. q= Number J W= Number J AU= Number J ΔΗ= Number J JK-1 AS = Number ASsurr = ASuniv = Number JK-1 JK-1 Number Submit Assignment Quit & Save Back Question Menu Nextarrow_forwardCalculate AS (for the system) when the state of 2.00 mol diatomic perfect gas molecules, for which Cp,m = (7/2)R, is changed from 25 C and 1.50 atm to 135 C and 7.00 atm.arrow_forwardWhat are the values of q, w, AU, AH, AS, ASsurr, and ASuniv for the following a constant pressure process for a system containing 0.934 moles of CH3OH ? CH3OH(I, 22.0 °C, 1.00 atm) → CH3OH(g, 125.0 °C, 1.00 atm) Assume that the volume of CH3OH(I) is much less than that of CH3OH(g) and that CH3OH(g) behaves as an ideal gas. Also, assume that the temperature of the surroundings is 125.0 °C. Data: Molar heat capacity for CH3OH(I), Cp,m = 81.1 J K-¹ mol-1 Molar heat capacity for CH3OH(g), Cp,m = 44.1 J K-1 mol-¹ Enthalpy of vaporization, AvapH = 35.2 kJ mol-¹ at 64.7 °C and 1.00 atm Enter answers that are accurate to three (3) or more significant figures.arrow_forward
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