Question

como balancear NF3+AlCl3 - N2+Cl2+AlF3 por redox

Answer 1

+3  -1                        +3   -1                     0                    0              +3  -1
2NF3 + 2AlCl3 →N2 +  3Cl2+AlF3

 +3                0

2N  + 3e- → N2             !   2    intercambiar electrones

2Cl-1   → Cl2 + 2e-      ¡    3

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4N + 6 Cl-1 → 2N2 + 3Cl2