Predict if the reactionhappens spontaneously bycalculating the standardentropy (ASrxn), entropy ofthe surroundings (ASsurr),and entropy of the universe(ASuniv) of the reaction at250C:Hz(g) + CuO(s)_+ Cu(s) + H20(g)AHre= -86.6 kJ

Spontaneity of a reaction can be determined with the help of ∆G. If ∆G is negative, reaction is…

Answered: Predict if the reaction happens…

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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Consider each of the following reactions and decide whether the standard entropy change for the reaction will be, (a) Positive; or (b) Very close to Zero; or (c) Negative. N2 (g) + 3 H2 (g) = 2 NH3 1 (g) 1 2 Na (1) + H2 (g) = 2 NaH (s) Cu (s) + 2 H2SO4 (aq) = 2 1. negative CusO4 (aq) + 2 H20 (1) + SO2 (g) 2. positive PCI5 (s) = PC|3 (s) + Cl2 (g) 2 3. very close to zero H2 (g) + Cl2 (g) = 2 HCI (g) BaSO4 (s) + 2 H20 (g) = 1 BaSO4.2H2O (s)
Calculate the entropy change in surroundings when 1.00 mol of H2O (l) is formed under standard conditions, ΔfH = -286 kJmol-1. ΔSsurr = 959.73 J mol-1 K-1
Calculate AGºrxn for the reaction: BaCO3(s)→BaO(s)+CO₂(g) Use the following reactions and given AGºrxn values: Ba(s)+CO₂(g)+1/2O2(g) →BaCO3(s) AG°rxn=-1134.4kJ 2Ba(s)+O₂(g)→2BaO(s), AGºrxn=-520.3kJ BaCO3(s)→BaO(s)+CO₂(g). AGºrxn =
Calculate the reaction enthalpy for the decomposition of hydrogen peroxide, 2H2O20 H26) + O26) 2H2) + O216 2H2O0 + O26 from the following data: H2O20; AH°RXN = -187.8 kJ - 2H2O0; AH°Rxn = -571.6 kJ
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 ATP(aq) + H, O(1) - ADP(aq) + HPO (aq) for which AGan = -30.5 kJ/mol at 37.0 °C and pH 7.0. Calculate the value of AG, in a biological cell in which [ATP] = 5.0 mM, [ADP] = 0.40 mM, and (HPO = 5.0 mM. %3D %3D kJ/mol AGan = + TOOLS x10 Is the hydrolysis of ATP spontaneous under these conditions? O yes no
Consider the reaction 2NaOH(aq) + H2(g)—2Na(s) + 2H2O(l) for which AH° = 368.6 kJ and AS° = 15.30 J/K at 298.15 K. (1) Calculate the entropy change of the UNIVERSE when 1.759 moles of NaOH(aq) react under standard conditions at 298.15 K. ASuniverse= J/K (2) Is this reaction reactant or product favored under standard conditions? (3) If the reaction is product favored, is it enthalpy favored, entropy favored, or favored by both enthalpy and entropy? If the reaction is reactant favored, choose 'reactant favored'. Submit Answer
What is the change in entropy, AS, for the following reaction? Use Table G in your book for values of standard entropies. Your answer should be in J/K mol. CaCO3(s) + 2 H'(aq) → → Ca² (aq) + H₂O(l) + CO2(g) O 264.9 J/K mol O 118.6 J/K mol 394.3 J/K mol 137.7 J/K mol 2
Consider the reaction 6CO2(g) + 6H20((1) C,H12O6 + 602(g) for which AH° = 2.801×10° kJ and AS° = -259.0 J/K at 298.15 K. (1) Calculate the entropy change of the UNIVERSE when 1.722 moles of CO2(g) react under standard conditions at 298.15 K. ASuniverse J/K (2) Is this reaction reactant or product favored under standard conditions? (3) If the reaction is product favored, is it enthalpy favored, entropy favored, or favored by both enthalpy and entropy? If the reaction is reactant favored, choose 'reactant favored'.
(a) State the temperature range over which the following reactions is spontaneous AS (J/K) AH (KJ) -176 -285 NH3 (g) + HCl (g) → NH4C(s)
Vhemical engineer is studying the two'reactions shown in the table below. In each case, he fills a reaction vessel with some mixture of the reactants and products at a constant temperature of 82.0 °C and constant total pressure. Then, he measures the reaction enthalpy AH and reaction entropy AS of the first reaction, and the reaction enthalpy AH and reaction free energy AG of the second reaction. The results of his measurements are shown in the table. Complete the table. That is, calculate AG for the first reaction and AS for the second. (Round your answer to zero decimal places.) Then, decide whether, under the conditions the engineer has set up, the reaction is spontaneous, the reverse reaction is spontaneous, or neither forward nor reverse reaction is spontaneous because the system is at equilibrium. 2NH, (g) N₂(g)+ 3H₂ (e) 2A1(s) + Fe₂O₂ (s) ALO, (s) + 2Fe(s) AH = 92, kJ AS = 302. FR AG = KJ Which is spontaneous? Othis reaction AS = the reverse reaction Oneither AH = -852. kJ K AG…
A chemicai engineer is studying the two reactions shown in the table below. In each case, he fills a reaction vessel with some mixture of the reactants and products at a constant temperature of 42.0 °C and constant total pressure. Then, he measures the reaction enthalpy AH and reaction entropy AS of the first reaction, and the reaction enthalpy AH and reaction free energy AG of the second reaction. The results of his measurements are shown in the table. Complete the table. That is, calculate AG for the first reaction and AS for the second. (Round your answer to zero decimal places.) Then, decide whether, under the conditions the engineer has set up, the reaction is spontaneous, the reverse reaction is spontaneous, or neither forward nor reverse reaction is spontaneous because the system is at equilibrium. ΔΗ Ξ - 70. kJ J AS = -151. K TiCl, (g) + 2H,0(g) → Tio, (s) + 4H Cl (g) AG = || kJ Which is spontaneous? this reaction the reverse reaction neither AH = 439. kJ AS = K 4H,PO, (s) →…
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Predict if the reaction happens spontaneously by calculating the standard entropy (ASrxn), entropy of the surroundings (ASsurr), and entropy of the universe (ASuniv) of the reaction at 250C: Ha(g) + CuO(s)- Cu(s) + H2O(g) AHre -86.6 kJ