Page 686 - Chemistry--atom first
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676 Chapter 12 | Thermodynamics
38. Among other things, an ideal fuel for the control thrusters of a space vehicle should decompose in a spontaneous exothermic reaction when exposed to the appropriate catalyst. Evaluate the following substances under standard state conditions as suitable candidates for fuels.
(a) Ammonia: (b) Diborane: (c) Hydrazine:
(d) Hydrogen peroxide:
39. Calculate ΔG° for each of the following reactions from the equilibrium constant at the temperature given. (a)
(b) (c)
(d)
(e)
(f)
40. Calculate ΔG° for each of the following reactions from the equilibrium constant at the temperature given.
(a) (b) (c)
(e) (f)
(d)
41. Calculate the equilibrium constant at 25 °C for each of the following reactions from the value of ΔG° given. (a)
(b)
(c)
(d)
(e)
42. Nitric acid, HNO3, can be prepared by the following sequence of reactions:
How much heat is evolved when 1 mol of NH3(g) is converted to HNO3(l)? Assume standard states at 25 °C.
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