Question

Determine which of the following reactions should occur spontaneously. -) Br2 + 2C1 Cl2 + 2Br SØlba& spontaneous ) Ni2+ + Fe Fe2+ + Ni Won spontaneous
hi i already know the answer i just need an in depth explanation of how and why they are spantaneous or not, including any proper vocabulary that can sound impressive and just overall a complex but not too complex explanation explaining how to determine this and why its imortant, etc thank you !

Answer 1

AY are i Br2 agent le The night answers +201 - Clet 2 Br Non spontaneous N, 2+ + Fe - Fe 2+ + N. spontaneous The spontaneuity of the reactions depents on the oxidation and reduction powers of compounds Between chlorine and bromine, chloride is the best stronger osudising chlorine can take electrones from bromine easily. But the first reaction shows bromine takes electrones from chlorine.. This can be shown bumerari cally by calculating the cell emf for the reaction. From standard tables potential a) chet 2e ->2C1 6) Brgt 2e - 2 By Ered - 1.09 reversing reacton c) 201 - Cl₂ +2e Cou =-1-36 Wher reaction reverses to reverses) Now adding both b ande = 1.36 Ered ... (when ca I KANNURI KOTTAYAM IMALAPPURAM OZNIKODE KOOTHIRUNANICURAM

Br + 2e + 201 - 2Br + Cl2tze Brat 201 - 2Br + Cl2 Ecell Ered & Osci. 1.09 + (-1.36) =-0.27 V If a cell potential has. negative value then the cell reaction is bon Spontaneous. 1) Fe is better reducing agent than Nio Fe can easily lose electrones to Ni. re From Standard potential tables 2+ a) Fe + 2e - Fe Ered= -0.4hv b) Ni2+ + 2e Ni Ered -0.25 u reverse Sou = 0.44 V reaction c) Fe Fe 2+ + 2 Now add 6 anda N, 2 + +26+ Fe - Nit Fe2+ + 2€ Eceu Ered + 60 -0.25 + -0.25+ (0.44) Eceu= 0.19
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