Chapter 16 - Thermodynamics and Free Energy

5) Ca¹2(aq) + Ba(s) = Ca(s) + Ba¹²(aq) T (K) Кс 198 6.5 248 12.3 298 18.7 Use the experimental data above to calculate AH xn and As°rxn for the reaction. Calculate theoretical values for AHºrn and As xn using AH (Ba*2(aq)) = -537.6kJ/mol, AH°(Ca+2 (aq)) = -542.8kJ/mol, S°(Ba(s)) = 62.5J/molK, S°(Ba¹2(aq)) = 9.6J/molK, S°(Ca(s)) = 41.6J/molk and S°(Ca¹²(aq)) = -53.1J/molK,. Do the experimental data agree with the theoretical values?

(d) The following dlagram shows an Incomplete Born-Haber cycle for the formation of magnesium chloride, MgCl.. Mg (g) 2 C(g) AH, = 1450 kJ 2AH: = 2(-349) kJ Mg"g) + 2 Cr(g) B. = 738 kJ Mg(g) + 2 Cl(g) - AH AH; = 242 kJ %3D Mg(g) + Cl:(g) AH 148 kJ A AH = -446 kJ MgCl:(s) Enthalpy, H

(-2220.1)=[-1180.5+-1141.2]-[x] (-2220.1)=[-2321.7][2] +23 21.4 +2321.7 -101.6x Днез нд →-101.6 h mol Assuming that all of the heat evolved in burning 30.0 grams of propane is transferred to 8.00 kilograms of water (specific heat = 4.18 J/g-K), calculate the increase in temperature of water. online at www.nms.org. AP is a trademark of the College Entran terial, Used with permission.

Given the data in the table below, AHrxn for the reaction Ca(OH); + 2H;AsO4 → Ca(H;AsO4)2 + 2H;O is _ kJ. [A] -4219 (B] -130.4 [C] -4519 [D] -76.4 AH, (kJ/mol) -986.6|| Substance Ca(ОН), HASO, Ca(H;AsOa)2 -900.4 -2346.0 H;0 -285.9 O A В C D

Consider the following processes: 2A → (1/2)B - C AH1 = 5 kJ/mol (3/2)B + 4C - · 2A + C + 3D AH, = -15 kJ/mol E + 4A → C AH3 = 10 kJ/mol Calculate AH for: C → E + 3D 0 kJ/mol 10 kJ/mol -10 kJ/mol -20 kJ/mol 20 kJ/mol

Calculate AH for the reaction C2H4 (g) + H2 (g) → C2H6 (g), from the following data. C2H4 (g) + 3 O2 (g) → 2 CO2 (g) + 2H2O (1) AH 1411 kJ / mol C2H6 (g) + O2 (g) → 2 CO2 (g) + 3 H2O (1) ΔΗ - 1560 kJ / mol H2 (g) + O2 (g) → H2O (1) AH = - 285. 8 kJ / mol

General Chemistry 4th Edition McQuarrie • Rock • Gallogly University Science Books presented by Macmillan Learning A critical reaction in the production of energy to do work or drive chemical reactions in biological systems is the hydrolysis of adenosine triphosphate, ATP, to adenosine diphosphate, ADP, as described by the reaction АТР(аq) + H,О() — ADP(aq) + HРО (аq) ADP(aq) + HPO, (aq) for which AG;ixn = -30.5 kJ/mol at 37.0 °C and pH 7.0. Calculate the value of AGrxn in a biological cell in which [ATP] = 5.0 mM, [ADP] = 0.10 mM, and [HPO;-] = 5.0 mM. kJ/mol rxn Is the hydrolysis of ATP spontaneous under these conditions? О yes no Question Source: McQuarrie, Rock, And Gallogly 4e - General Chemsitry | Publisher: University Science Books ?

Use the following data (in kJ/mol) to estimate DH for the reactionS2(g) 1 e2 n S22(g). Include an estimate of uncertainty.Assume that all values are known to 61 kJ/mol.

17. Given the following set of reaction data, AH = -285.83 kJ mol- H2 (g)+}02(8) 2B(s) +3H, (8) 2B(s) +O2(8) –→ B,O3(s) → H2O(1) → B,H, (8) AH = 36.4 kJ mol- AH = –1273.5 kJ mol determine the heat of reaction (in kJ mol') for the following reaction. – B2O3 (s) +3H,0(1) w bns maldorg B,H, (8) + 30, (g) - AH = ? kJ mol-1 lo teari done roi noltaupa 189T) of 9je s beau mo A: –2167

Use the data below to calculate AGOrxn for the reaction: A + 2B →2C+2D Data: A + 2B AG° rxn с AGO → D rxn = → 4C 331.0 kJ/mol 450.0 kJ/mol

It is estimated that the net amount of carbon dioxide fixed byphotosynthesis on the landmass of Earth is 5.5 x 1016 g/yrof CO2. Assume that all this carbon is converted into glucose.(a) Calculate the energy stored by photosynthesis onland per year, in kJ. (b) Calculate the average rate of conversionof solar energy into plant energy in megawatts, MW11W = 1 J/s2. A large nuclear power plant produces about103 MW. The energy of how many such nuclear power plantsis equivalent to the solar energy conversion?

When solid ammonium nitrate dissolves in water, the solution becomes cold. This is the basis for an "instant ice pack". When 67.7 g of solid NH4NO3NH4NO3 dissolves in 93.1 g of water at 50.8 °C in acalorimeter, the temperature decreases to 33.0 °C. Calculate the value of energy for this reaction in J. A. -673 B. 5,040 C. 6,930 D. 12,000 E. 2,860

Consider a system of three particles in a container that is mentally divided in half.  You can think of the three particles as being different colors or with different labels (like A, B, C).  Match each statement with its correct number.  (A number may or may not be used more than once.) Group of answer choices number of microstates with two particles in one half of the container and one particle in the other half              [ Choose ]             2             0             1             6             4             3             5            number of microstates with all three particles in one half of the container              [ Choose ]             2             0             1             6             4             3             5            number of microstates with no more than one particle in any half of the container              [ Choose ]             2             0             1             6             4             3             5            the Wf/Wi…