5. Use the following data to calculate A,H and A,S for the autoionization of water: H2O(1)→ H*(aq) + OH(aq) T (K) 273 298 308 313 323 Kw 1.14 x 10-15 1.00 × 10-¹4 x 2.09 x 10-14 2.92 x 10-14 5.47 x 10-¹4

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Chapter1: Chemical Foundations
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Only solve question num 5 please
4.
5.
6.
7.
Using data from Appendix IIB in the eText, calculate A,Gº and K for the reaction at 25°C:
NaCl(s) Na*(aq) + Cl(aq)
Use the following data to calculate A,H° and A,S for the autoionization of water:
H2O(1)→ H*(aq) + OH'(aq)
T (K)
273
298
308
313
323
Kw
1.14 x 10-¹5
1.00 ×
10-¹4
2.09 x
10-14
2.92 x 10-14
5.47 x 10-¹4
Use a spreadsheet (e.g., Microsoft Excel software) to create the graph required to solve this
problem.
A reaction has an equilibrium constant of 9.1 x 10² at 298 K. At 600 K, the equilibrium constant is
0.84. Find A,H° for the reaction.
Hydrazine, N₂H4, is a toxic gas that has a number of applications, including its use as a propellant
on space vehicles. An early means of industrial production of hydrazine was from the reaction of
sodium hypochlorite (NaCIO) and ammonia (NH3).
Use the half reactions below to write a balanced equation for the reaction of hypochlorite and
ammonia, and calculate E cell and A.Gº for the reaction. Predict what would happen if you mixed
household bleach (an alkaline solution of NaCIO) and a window cleaner containing ammonia.
CIO (aq) + H₂O(l) + 2e → 2OH(aq) + Cl(aq)
N₂H4(g) + 2 H₂O(l) + 2e → 2NH3(aq) + 2OH(aq)
E = 0.90 V
E = -0.10 V
Transcribed Image Text:4. 5. 6. 7. Using data from Appendix IIB in the eText, calculate A,Gº and K for the reaction at 25°C: NaCl(s) Na*(aq) + Cl(aq) Use the following data to calculate A,H° and A,S for the autoionization of water: H2O(1)→ H*(aq) + OH'(aq) T (K) 273 298 308 313 323 Kw 1.14 x 10-¹5 1.00 × 10-¹4 2.09 x 10-14 2.92 x 10-14 5.47 x 10-¹4 Use a spreadsheet (e.g., Microsoft Excel software) to create the graph required to solve this problem. A reaction has an equilibrium constant of 9.1 x 10² at 298 K. At 600 K, the equilibrium constant is 0.84. Find A,H° for the reaction. Hydrazine, N₂H4, is a toxic gas that has a number of applications, including its use as a propellant on space vehicles. An early means of industrial production of hydrazine was from the reaction of sodium hypochlorite (NaCIO) and ammonia (NH3). Use the half reactions below to write a balanced equation for the reaction of hypochlorite and ammonia, and calculate E cell and A.Gº for the reaction. Predict what would happen if you mixed household bleach (an alkaline solution of NaCIO) and a window cleaner containing ammonia. CIO (aq) + H₂O(l) + 2e → 2OH(aq) + Cl(aq) N₂H4(g) + 2 H₂O(l) + 2e → 2NH3(aq) + 2OH(aq) E = 0.90 V E = -0.10 V
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