chemical thermodynamics of neptunium and plutonium - U.S. ...

48 3. Selected neptunium dataTable 3.2: (continued)SpeciesReactionlog 10 K ◦ r G ◦ m r Hm ◦ r Sm◦(kJ · mol −1 ) (kJ· mol −1 ) (J· K −1 · mol −1 )NpO 2 OH(aq)H 2 O(l) + NpO + 2Å H + + NpO 2 OH(aq)−11.300 64.501NpO 2 OH + ±0.700 ±3.996H 2 O(l) + NpO 2+2Å H + + NpO 2 OH +−5.100 29.111±0.400 ±2.283NpO 2 (OH) − 2 2H 2 O(l) + NpO + 2Å 2H + + NpO 2 (OH) − 2−23.600 134.710±0.500 ±2.854NpO 3·H 2 O(cr) 2H 2 O(l) + NpO 2+2Å 2H + + NpO 3·H 2 O(cr)−5.470 31.223Np(OH) 4 (aq)(NpO 2 ) 2 (OH) 2+2±0.400 ±2.2832H 2 O(l) + NpO 2 (am, hyd) Å Np(OH) 4 (aq)−8.300 47.377±0.500 ±2.8542H 2 O(l) + 2NpO 2+2Å (NpO 2 ) 2 (OH) 2+2+ 2H +−6.270 35.789±0.210 ±1.199(NpO 2 ) 3 (OH) + 5 5H 2 O(l) + 3NpO 2+2Å (NpO 2 ) 3 (OH) + 5 + 5H+−17.120 97.722±0.220 ±1.256NpF 3+ F − + Np 4+ Å NpF 3+NpF 2+2NpO 2 F(aq)NpO 2 F + F − + NpO 2+2Å NpO 2 F +8.960 −51.144 1.500 176.569 (a)±0.140 ±0.799 ±2.000 ±7.2242F − + Np 4+ Å NpF 2+215.700 −89.616±0.300 ±1.712F − + NpO + 2Å NpO 2 F(aq)1.200 −6.850±0.300 ±1.7124.570 −26.086±0.070 ±0.400NpO 2 F 2 (aq) 2F − + NpO 2+2Å NpO 2 F 2 (aq)7.600 −43.381±0.080 ±0.457NpCl 3+ Cl − + Np 4+ Å NpCl 3+1.500 −8.562±0.300 ±1.712NpO 2 Cl + Cl − + NpO 2+2Å NpO 2 Cl +0.400 −2.283±0.170 ±0.970(Continued on next page)