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Classify each of the following reactions as one of the four possible types: 1. spontaneous at all temperatures; 2. nonspontaneous at all temperatures; 3. spontaneous at low T; nonspontaneous at high T; 4. spontaneous at high T; nonspontaneous at low T. (a) N2 (g) + 3F2(g) → 2NF3 (g); ΔH° = -249 kJ; ΔS° = -278 J/K (b) N2(g) + 3Cl2(g) → 2NCl3 (g); ΔH° = 460 kJ; ΔS° = -275 J/K (c) N2F4(g) → 2NF2(g); ΔH° = 85 kJ; ΔS° = 198 J/K Drag the appropriate reactions to their respective bins.