Thermodynamics, Statistical Thermodynamics, & Kinetics
3rd Edition
ISBN: 9780321766182
Author: Thomas Engel, Philip Reid
Publisher: Prentice Hall
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Chapter 4, Problem 4.27NP
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A sample of the sugar d-ribose (C5H10O5) of mass 0.727 g was placed in a calorimeter and then ignited in the presence of excess oxygen. The temperature rose by 0.910 K. In a separate experiment in the same calorimeter, the combustion of 0.825 g of benzoic acid, for which the internal energy of combustion is −3251 kJ mol−1, gave a temperature rise of 1.940 K. Calculate the enthalpy of formation of d-ribose.
Chapter 4 Solutions
Thermodynamics, Statistical Thermodynamics, & Kinetics
Ch. 4 - In calculating HR at 285.15 K, only the Hf of the...Ch. 4 - What is the point of having an outer water bath in...Ch. 4 - Is the following statement correct? If not rewrite...Ch. 4 - Does the enthalpy of formation of H2Ol change if...Ch. 4 - Why are elements included in the sum in Equation...Ch. 4 - Why are heat capacities of reactants and products...Ch. 4 - Prob. 4.7CPCh. 4 - Prob. 4.8CPCh. 4 - Prob. 4.9CPCh. 4 - Prob. 4.10CP
Ch. 4 - Prob. 4.11CPCh. 4 - Prob. 4.12CPCh. 4 - You wish to measure the heat of solution of NaCl...Ch. 4 - Prob. 4.14CPCh. 4 - Prob. 4.15CPCh. 4 - Prob. 4.16CPCh. 4 - Prob. 4.17CPCh. 4 - Dogs cool off in hot weather by panting. Write a...Ch. 4 - Prob. 4.19CPCh. 4 - Prob. 4.20CPCh. 4 - Given the data in Table 4.1 (Appendix, Data...Ch. 4 - Prob. 4.2NPCh. 4 - A sample of K(s) of mass 2.740 g undergoes...Ch. 4 - Calculate Hf for NO(g) at 975 K, assuming that the...Ch. 4 - Prob. 4.5NPCh. 4 - Derive a formula for HRT for the reaction...Ch. 4 - Prob. 4.7NPCh. 4 - Prob. 4.8NPCh. 4 - Calculate the standard enthalpy of formation of...Ch. 4 - The following data are a DSC scan of a solution of...Ch. 4 - Prob. 4.11NPCh. 4 - Prob. 4.12NPCh. 4 - Prob. 4.13NPCh. 4 - Prob. 4.14NPCh. 4 - Prob. 4.15NPCh. 4 - The total surface area of Asia consisting of...Ch. 4 - Prob. 4.17NPCh. 4 - A sample of Na2SO4s is dissolved in 225 g of water...Ch. 4 - Nitrogen is a vital component of proteins and...Ch. 4 - Prob. 4.20NPCh. 4 - Prob. 4.21NPCh. 4 - A 0.1429 g sample of sucrose C12H22O11 is burned...Ch. 4 - Prob. 4.23NPCh. 4 - Prob. 4.24NPCh. 4 - Prob. 4.25NPCh. 4 - Given the following heat capacity data at 298 K,...Ch. 4 - Calculate H for the process in which Cl2g...Ch. 4 - From the following data at 298.15 K C, calculate...Ch. 4 - Prob. 4.29NPCh. 4 - Use the average bond energies in Table 4.3 I to...Ch. 4 - Prob. 4.31NPCh. 4 - Prob. 4.32NPCh. 4 - Prob. 4.33NPCh. 4 - Prob. 4.34NPCh. 4 - Prob. 4.35NP
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- What are the numerical values of the heat capacities c-v and c-p of a monatomic ideal gas,in units of cal/mol.K and L.atm/mol.K?arrow_forwardThe standard enthalpy of formation of H2O(l) at 298 K is 285.8 kJ/mol. Calculate the change in internal energy for the following process at 298 K and 1 atm: H2O(l)H2(g)+12O2(g)E=? (Hint: Using the ideal gas equation, derive an expression for work in terms of n, R, and T.)arrow_forwardThe Dieterici equation of state for one mole of gas is p=RTe-aVRTV-b Where a and b are constants determined experimentally. For NH3g, a = 10.91 atm. L2 and b = 0.0401 L. Plot the pressure of the gas as the volume of 1.00 mol of NH3g expands from 22.4 L to 50.0 L at 273 K, and numerically determine the work done by the gas by measuring the area under the curve.arrow_forward
- Benzoic acid, C6H5COOH, is a common standard used in bomb calorimeters, which maintain a constant volume. If 1.20 g of benzoic acid gives off 31, 723 J of energy when burned in the presence of excess oxygen and in a water bath having a temperature of 24.6 C, calculate q, w, H, and U for the reaction.arrow_forwardCalculate the work for the isothermal, reversible compressionof 0.245 moleof an idealgas going from 1.000L to 1.00 mL if the temperature were 95.0C.arrow_forwardWhat is the change in internal energy when a gas contracts from 377mL to 119mLundera pressure of 1550 torr, whileat the same time being cooled by removing 124.0J ofheat energy?arrow_forward
- Many compressed gases come in large,heavy metal cylindersthat are so heavy that they need a special cart to move them around. An80.0-Ltank ofnitrogen gas pressurized to 172 atm is left in the sun and heats from its normal temperature of 20.0C to 140.0C. Determine a the final pressureinsidethe tank and b the work, heat, and U of the process. Assume that behavior is ideal and the heatcapacity of diatomic nitrogenis 21.0J/mol.K.arrow_forwardWhat are the two ways that a final chemical state of a system can be more probable than its initial state?arrow_forwardWhat is the finaltemperature of0.122 mole ofmonatomic ideal gas that performs 75J of work adiabatically if the initial temperature is 235C?arrow_forward
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Solutions: Crash Course Chemistry #27; Author: Crash Course;https://www.youtube.com/watch?v=9h2f1Bjr0p4;License: Standard YouTube License, CC-BY