Chemistry
10th Edition
ISBN: 9781305957404
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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Transcribed Image Text:Calculate AG° in kJ for a reaction with E°cell = -0.061 V and n = 5.
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Answer
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Transcribed Image Text:An electrochemical cell is based on these two half-reactions:
Pb(s) - Pb2*(ag, 1.43 M) + 2 e
MnO4 (aq, 0.11 M) + 4 H*(aq, 2.07 M) + 3 e - MnO2(s) + 2 H20(1)
E° red =
+1.68 V
Calculate the cell potential at 25 °C.
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Answer
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- Review Topics] [References Use the References to access important values if needed for this question. For the reaction FezO4(s) + 4H2(g)3Fe(s) + 4H,O(g) AH° = 151 kJ and AS° = 169 J/K AG° for this reaction would be negative at temperatures (above, below) K. Enter above or below in the first box and enter the temperature in the second box. Assume that AH° and AS° are constant. Submit Answer Retry Entire Group 4 more group attempts remainingarrow_forward1. Using Hess's Law, calculate AH for this reaction: (T: 4) 2H3BO3(aq) →→→ B₂O3(s) + 3H₂O(l) (1) H₂BO3(aq) → HBO₂(aq) + H₂O(E) AH = -0.020 kJ (2) 2B₂O3(s) + H₂O(l) → H₂B4O7(s) AH = -17.5 kJ (3) H₂B4O7(s) + H₂O(l) → 4HBO₂(aq) AH = -11.3 kJarrow_forwardCalculate [OH] for a HNO;(aq) solution at 25°C where [H'] = 4.3 x 10 M. Show all work and units.arrow_forward
- This reaction is _______ (product or reactant) favored under standard conditions at 258 Karrow_forwardConsider the following reaction: CuO(s) + H₂(g) → Cu(s) + H₂O(1) AH = -129.7 kJ Calculate A Hy for CuO(s). HO 8.AT 8/285 (DOHarrow_forward[Review Topics] [References] Use the References to access important values if needed for this question. For the reaction 2BrF3(g) Br2(g) + 3F2(g) AH° = 542 kJ and AS° = 269 J/K AG° would be negative at temperatures (above, below) K. Enter above or below in the first box and enter the temperature in the second box. Assume that AH° and AS° are constant. Submit Answer Retry Entire Group 4 more group attempts remaining edarrow_forward
- Determine AG (in kJ) for the following reaction at 325 K when the concentrations of the species are as follows: NO₂= 10.00 M, N₂O4 = 14.3 M. AG°f (NO₂) = 51 kJ/mol, AG (N₂O4) = 97.7 kJ/mol. 2 NO2(8) N₂O4(8)arrow_forwardWhat is the value of the equilibrium constant for the following reaction at 25C with a delta Grxn = -6.38 kJ? H2(g) + Cl2(g) <-> 2HCl(g)arrow_forwardConsider the reaction: O ICI(g) + Cl₂(g) → ICl3(s). The AG (f) of ICI (g) is -5.5 kJ/mol and the AG(f) of ICl3(s) is -22.59 kJ/mol What is the AG° of the reaction, in kJ/mol? Tap here or pull up for additional resourcesarrow_forward
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