- C Diborane Ag 4 0 Ah Spontaneity 4 0 1093 6 Spontaneous Nonspontaneous Thermicity B H6 G 2 B S 3 H G Kj 1 (231.54 KiB) Viewed 11 times
(c) diborane: AG° 4.0 AH° = Spontaneity = 4.0 1093.6 spontaneous nonspontaneous Thermicity B₂H6(g) → 2 B(s) + 3 H₂(g) kJ/mol kJ/mol endothermic exothermic Suitability suitable O not suitable (d) nitryl chloride: AG° = 4.0 ΔΗ° = 4.0 39.1 Spontaneity Thermicity spontaneous O nonspontaneous O endothermic exothermic Suitability CINO₂(g) O suitable O not suitable kJ/mol kJ/mol CINO(g) + 1/2 0₂(g)
Please use the values in the resources listed below instead of the textbook values. Among other things, an ideal fuel for the control thrusters of a space vehicle should decompose in a spontaneous exothermic reaction when exposed to an appropriate catalyst. Evaluate the following substances under standard state conditions as suitable candidates for fuels. (Provide AG and AH in kJ/mol reactant.) (a) hydrazine: AG⁰ 40-149.3 AH°40 95.4 Spontaneity Ⓒspontaneous O nonspontaneous Thermicity N₂H4(9) N₂(g) + 2 H₂(g) kJ/mol kJ/mol O endothermic Ⓒexothermic Suitability Ⓒsuitable O not suitable (b) nitrous oxide: AGO 40 AH-81.6 Spontaneity Thermicity spontaneous O nonspontaneous N₂O(g) N₂(g) + 1/2O₂(g) kJ/mol kJ/mol O endothermic Ⓒexothermic