An oxygen (O₂) molecule is adsorbed on a patch of surface (see sketch at right). This patch is known to contain 400 adsorption sites. The (0₂) molecule has enough energy to move from site to site, so it could be on any one of them. Suppose part of the surface becomes inaccessible, so that only 169 adsorption sites are now available for the molecule. Calculate the change in entropy. Round your answer to 3 significant digits, and be sure it has the correct unit symbol. B 0.8 04 X H Using the thermodynamic information in the ALEKS Data tab, calculate the standard reaction entropy of the following chemical reaction: N₂ (g) + 3H₂(g) → 2NH, (g) Round your answer to zero decimal places. One way an O, molecule could be adsorbed on a patch of surface with 16 sites. X

An oxygen (O₂) molecule is adsorbed on a patch of surface (see sketch at right). This patch is known to contain 400 adsorption sites. The (0₂) molecule has enough energy to move from site to site, so it could be on any one of them. Suppose part of the surface becomes inaccessible, so that only 169 adsorption sites are now available for the molecule. Calculate the change in entropy. Round your answer to 3 significant digits, and be sure it has the correct unit symbol. B 0.8 04 X H Using the thermodynamic information in the ALEKS Data tab, calculate the standard reaction entropy of the following chemical reaction: N₂ (g) + 3H₂(g) → 2NH, (g) Round your answer to zero decimal places. One way an O, molecule could be adsorbed on a patch of surface with 16 sites. X

Chemistry for Engineering Students

3rd Edition

ISBN:9781285199023

Author:Lawrence S. Brown, Tom Holme

Publisher:Lawrence S. Brown, Tom Holme

Chapter10: Entropy And The Second Law Of Thermodynamics

Section: Chapter Questions

Problem 10.29PAE

See similar textbooks

Similar questions

Suppose a compound could point in any of three directions in the solid and still have the same energy. What would be the total entropy (J/K) of orientation if 1.2703e+14 molecules are randomly distributed?
3. With an appropriate example explain the concept of residual entropy.
When nitric acid is produced industrially, nitrogen monoxide, NO, is first formed at high temperature. Bakefetr reacts NO on cooling further with oxygen to nitrogen dioxide: 2 NO(g) + O2 ⇌ 2 NO2 (g) Table 1: Thermodynamic data at 25°C. Bond ΔfHom Som Cop,m NO(g) 90.25 210.76 29.34 O2(g) 0.00 205.14 29.36 NO2(g) 33.18 240.06 37.20 1) Calculate (with all relevant intermediate calculations) the standard reaction Gibbs free energy, ΔrG25o, for reaction (1) at 25°C from the data in Table 1 2) Calculate (with all relevant intermediate calculations) the equilibrium constant K25, for reaction (1) at 25°C. 3) Industrially, however, the reaction does not proceed at 25°C but at 500°C. Therefore, calculate (with all relevant intermediate calculations) the standard reaction Gibbs free energy, ΔrG500o, for reaction (1) at 500°C under the assumption that the standard molar heat capacities, Cop, in Table 1 are independent of temperature in the interval [25°C, 500°C]
The constant-pressure molar heat capacities of linear gaseous molecules are approximately (7)/(2)R and those of nonlinear gaseous molecules are approximately 4R. Estimate the change in standard reaction entropy of the following two reactions when the temperature is increased by 10 Kat constantpressure: (a) 2 H2(g) + O2(g) → 2 H2O(g),(b) CH4(g) + 2 O2(g) → CO2(g) + 2 H2O(g).
With a typical example, explain the concept of residual entropy
The temperature dependence of the heat capacity of non-metallic solids is found to follow the Debye T3 -law at very low temperatures, with Cp,m = aT3. (a) Derive an expression for the change in molar entropy on heating for such a solid. (b) For solid nitrogen, a= 6.15 x 10-3 J K-4 mol-1. What is the molar entropy of solid nitrogen at 5 K?
Chemistry show all work Calculate the PV work associated with the combustion of ethane (C2H6) at 298 K.
The combustion of acetylene in nitrous oxide is: C2H2(g) +5NO2(g)---->2CO2(g)+5N2(g)+H2O(l) Calculate the change in entropy for the combustion of acetylene in nitrous oxide, given the partial pressures: C2H2=0.80 bar N2O=0.45 bar CO2=1.7 bar N2=0.68 bar delta rS= j/molk
For the complete neutralization reaction between a 1 M strong acid and a 1 M strong base of equal initial volumes that is marked by a temperature rise, the entropy of neutralization is positive (ΔSrxn > 0) whereas the Gibbs free energy is negative (ΔGrxn < 0). Is this true or false? Please explain.
The term symbol for the ground state of a metal ion is 3P2. The residual entropy of a crystal of a salt of this metal ion at 0 K is ________.
A source generates five symbols with respective probabilities of 0.4,0.2,0.15, 0.15,0.1. Calculate the Entropy of the source. What would be the maximum Entropy and when would it occur.3 Suggest a fixed length code and calculate its efficiency and redundancy. Suggest a prefix variable length code and calculate its efficiency and redundancy.
Two helium atoms adsorb to a surface which has 20 sites to which it can adhere. What is the entropy of the system?