Question

Report Sheet Name Pre-Lab Questions [Ni(H0) ] + + 6 NHỮ[Ni(NH] + + H2O 1. Given the spontaneous chemical reaction shown above and the fact that the bond energy (AH) for one Ni-O bond is approximately ill/mol and one Ni-N bond is 392 kJ/mol, calculate the overall AHon of the reaction. Hint - think about the number of bonds being broken (endothermic) compared to the bonds that are formed (exothermic) 2. Is formation of Ni-N bonds from Ni-O bonds a favored process with respect to enthalpy? Explain your answer in terms of how it contributes to the overall AG 3. Based on the number of moles between the reactants and products, what would you predict for the Arx? 4. Given your answers to #2 and 3, what would you say is the main driving force that is leading to the above reaction being spontaneous? Page 49

The first two pages are a background of the lab and there is a page with the results. I would appreciate any help with this. If needed I have the pre-lab questions as well. I added in the pre-lab questions I will get them answered and updated again if that is what is needed.

Answer 1

I Solution - 17 Given Data AH of Nit o band= 381 kJ/mole pH of Hi-n bond = 392 kJ/mol [Nilteo,jft + CNYE —> Inilahs)*+5480 So in this reaction the Ni-o banals are break CEndo thermic) and Ni-n bond are formed (Exsthernuću Hi Hoon M Ni2+/. I NH3, NH2 2+ Hogi Nizt I OH U N HM NH₂ NH3, NHą Ú Ý there is 6 bonds are breats (Ni-o) and 6 bands are formed (Ni-H). Bhoor - Sorp - EHR Loan SHaxen +Pex392 Kü/male) - ( CX 331 kg/mi) J. ::--2352 Kgfra) – 2286 kJ/mol 2 - 4638 kJ/mol · DE LA So, shanna-4638. KJ /mo! Solution zin Ahaxn Los spontaneous The enthalpy of reaction is less than zero te Negative enthalpy is favoured for the reaction Ics Scannesse with this reaction is spontaneous

- means ich the energy released where when sharan is negative the reaction is exthoth exothermic which the energy during the reaction ACE A Hapen – TAS –cis re AG= Gibbs free chergy of reaction. She Enthalt by of reaction To Temperature of reaction. ASE Entropy Change of reaction. . SHoxn <o, AGCO = Spontaneous. oohen the ah of reaction is less than zero then the chanches of that 04 also less than Zero if entropy change is positive. for the above reaction Sharon is - 4638 kJ/mol which is very high amount of negative energy. when CS Scanned with CamScanner