at aChoose...Choose...exothermicinverselyendothermicdirectlyChoose...Choose...s at The following reaction is :CH,OH ) + 3/2 0,+ CO.2H,0+ 726.4 kJ+(1)2(9)Choose...

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Answered: The following reaction is : CH,OH ) +…

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Chemistry

The following reaction is : CH,OH ) + 3/2 0, + CO. 2H,O) + 726.4 kJ + (1) 2(9) Choose...

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Gibbs free energy (G) is a measure of the spontaneity of a chemical reaction. It is the chemical potential for a reaction, and is minimized at equilibrium. It is defined as G=H-TS where H is enthalpy, T' is temperature, and S is entropy. The chemical reaction that causes aluminum to corrode in air is given by 4A1+30₂-2Al₂O₁ in which at 298 K, AH = -3352 kJ and AS = -625.1J/K Part A What is the standard Gibbs free energy for this reaction? Assume the commonly used standard reference temperature of 298 K Express your answer as an integer and include the appropriate units. ▸ View Available Hint(s) μA AG - 89 kJ Submit Previous Answers X Incorrect; Try Again; 4 attempts remaining Part B What is the Gibbs free energy for this reaction at 5975 K? Assume that AH and AS do not change with temperature. Express your answer to two decimal places and include the appropriate units. > View Available Hint(s) ? AG= Value Units Submit
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Given that AG = 15 kJ/mol for the reaction A+ B 3C, what is the value of AG for the reaction 6C 2A + 2B? 30 kJ/mol 225 kJ/mol -30 kJ/mol -15 kJ/mol Next • Previous ecked at 1:10ao No now data to cave last DEC 2 tv 3.
21. Given the following two equations CH5OH(1) + 3 O2(8) 2 СO2(g) + 3 Н20(1) AH = -1370 kJ С-Н(8) + 3 О2(s) → 2 CO2(g) + 2 H2O(1) AH = -1410 kJ Calculate AH for the reaction C2H4(8) + H2O(1) CH5OH(I) ΔΗ- a. -2780 kJ b. 2780 kJ с. 40 kJ d. 40 kJ
A chemist measures the enthalpy change AH during the following reaction: 2 HNO;(1) + Mg(s)–→Mg (NO;),(s) + H,(g) AH=-443. kJ Use this information to complete the table below. Round each of your answers to the nearest kJ/mol. reaction AH 4Mg (NO,), (;) + 4H, (8) → 8HNO, (1) + 4Mg(s) Mg(NO,), (-) + H, (2) 2ΗΝΟ, ( ) + Με 1) 443 kJ HNO, () - Mg() -- Me(No,), 6) + H,6) (3)
Which of the following processes yields a AS = - ? O2 NO(g) + O2(g) ---> 2 NO2(g) NaCIO3(s)---> Na (aq) + CIO3(aq) COCI2(g) -- CO(g) + Cl2(g) CH3OH(1) ---> CO(g) + 2H2(g) None HII>
Given the solubility of ferrihydrite (Fe(OH)3) and goethite (FeOOH), with dissolution reactions shown below: [1] Fe(OH)3 3 H+ à Fe3+ + 3 H2O Ksp = 8.4 x 10^4 ∆ Gr0 = -28 KJ/mol Solubility of Fe(OH3) = 7.468 [2] FeOOH + 3 H+ à Fe3+ + 2 H2O Ksp = 8.8 x 10^-2 ∆ Gr0 = 6 KJ/mol Solubility of FeOOH = 0.353 QUESTION: [A] How much Fe3+ from ferrihydrite would dissolve at pH 2 ? [B] How much Fe3+ from ferrihydrite would dissolve at pH 7 ? [C] How much Fe3+ from goethite would dissolve at pH 2 ? [D] How much Fe3+ from goethite would dissolve at pH 7 ?
7- Given the following data: AG --51 kJ 2H: (g) + C (s) → CHa (g) 2H2 (g) + O: (g) - 2H:0 (1) C (s) + 02 (g) → CO: (g) Calculate AG° for CH4 (g) + 202 (g)CO2 (g) + 2H;0 (). AG-474 kJ AG°--394 kJ
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Calculate ΔH for the reaction (1) 2C (s, graphite) + H2(g) --> C2H2(g). given the following chemical equations and their respective enthalpy changes: (2) C2H2 + 5/2 O2(g) ---> 2CO2(g)+H2O(l) ΔH = -1299.6 KJ/mol (3) C(s, graphite) + O2(g) --> CO2(g) ΔH = -393.5 KJ/mol (4) H2 (g) + 1/2 O2(g) --> H2O(l) ΔH = -285.8 KJ/mol
1. Consider the reaction: A 2 B, where Keg 1.33 x 10-1. (a) What is the AGº' for this reaction? (b) If the reaction above is initially at standard-state conditions, what are the concentrations of A and B once equilibrium is reached?