Question

Use the following half-reactions to write 3 spontaneous reactions, calculate E°_cell for each reaction, what is the n number (number of electrons transferred).

1. Au⁺ (aq) + e⁻ → Au (s)         E° = 1.69 V
2. N₂O (g) + 2H⁺ (aq) + 2 e⁻ → N₂ (g) + H₂O (l)     E° = 1.77 V
3. Cr³⁺ (aq) + 3 e⁻ → Cr (s)        E° = -0.74 V
4. 
   Question 7 0.36 pts Use the following half-reactions to write 3 spontaneous reactions, calculate Eºcell for each reaction, what is the n number (number of electrons transferred). 1. Aut (aq) + → Au (s) E° = 1.69 V 2. N20 (g) + 2H+ (aq) + 2 e → N2(g) + H20 (1) F° = 1.77 V 3. Cr3+ (aq) + 3 e → Cr(s) E° = -0.74 V Reaction 1 and 2: Au (aq) + Au(s) + N2O(g) + N2(g) + H(aq) + H20(1) ► Aut(aq) + Au(s) + N2O(g) + N2(g) + H(aq) + H2O(1) Eºcell = Reaction 1 and 3: Aut(aq) + Au(s) + Cr3+(aq) + Cr(s) → Au(aq) + Au(s) + Cr3+ (aq) + Cr(s) Eºcell = v Reaction 2 and 3: N2O(g) + N2(g) + Cr3+ (aq) + Cr(s) + H(aq) + H2O(1) ► N2O(g) + N2(g) + Cr3+ (aq) + Cr(s) + H*(aq) + H20(1) Eºcell =
   

Answer 1

Reaction 1 and 2 co Al Caps + 29 Aug + IN 0 (3) + o N2 (8) + 2 Hags t o Hp 0 (0) 2 All Cags + [o] Alcs) t o No 0 (9) + 7 No (9) t o Heart 1 H₂ O(C) Eceu - (1177)-(2.692 10.08 Reaction 1 and 3 (3) Autan + o Akcs+ O Cr.3 + ( 1 cr.. o Auto+ 3 Ales) + 1 er caps + Toere 37 Eceu = (1.69)-(-0.74 = 2.43 Reaction 2 and 3 3 No 0 (9) + 0 Na (9) t o cromat Q Crist 6 It has t o H2O7 TO NO(g) + [3] N2 (9) + 2 CO 3 T O er is + Tollt can t 3 H₂Ow n = 6 E cel = (1.77) - (-0.74) = T 2. 51