Question

Experiment Thermodynamics: Entropy vs. Enthalpy OH, Background The formation of a Lewis Acid-Base complex occurs when you have a lone pair of electrons being donated to an electropositive ion or atom. Common examples are the Lewis Acid-Base complexes that most metal ions form in water, as shown here for nickel(II). In the case shown, the Lewis base (H2O) is donating a lone pair of electrons to the nickel(II) ion to form what is Höös called a "coordinate" covalent bond. These are covalent H, 0TH bonds where the two shared electrons come from the d ate same atom (in this case, the O-atom). INCHI The formation of a variety of Lewis Acid-Base complexes and their stability is very useful for understanding the concepts of spontaneity, enthalpy, and entropy. For example, addition of ammonia, NH3, to the [Ni(H20)6]2+ complex results in the spontaneous displacement of the water molecules and formation of a [Ni(NH).]2+ complex, as shown below. [Ni(H20).]2+ + 6 NH3 — [Ni(NH3).]2+ + 6H2O 0-H bonds weakened As you learned in lecture, the spontaneity of a chemical reaction can be predicted and explained through Gibbs Free Energy (AGrxn) and the equation below. AGran = AHX - TAS A spontaneous reaction can be entropy, enthalpy, or both entropy and enthalpy driven. In this lab, we will conduct a series of reactions, observe their spontaneity, then make predictions about the relative driving forces of the reactions.
The first two pages are the background of the lab. I would appreciate any help with the pre-lab questions, even if you cannot answer them all, so I could continue to the post-lab on my own.

Answer 1

AN DAN A Hoxen = 6xl-38.1 kJ/mol) + 6x 392 kJ/mol = 6x 11 kJ/mol for endothermic ran TAH ve & for = 66kJ/mol. exothermie oknot 1 & 6 Ni-o bend broken ! T & 6 Ni-n bend fomed. ) AH + +ve 2 mo AG = AHI- TAS for formation of Ni-o band AH = 35147/mol fra en i Nido en 114 = 392*3 /mol fromation of benda exothermie process 4 H tre.] So, AG is more are for formation of Ni-o bend as an fw fromation of Nimo bend is lower tre valu. so Nio band fromation is mere furoured compare to Ni-N bond formation. The first step'to getting the things you want out of life is this: Decide what you want.

ate [Ni(H20). ]* +6 NH3 -[Ni(NH)] 2*+6H20. Here & molecules reacts to gives the product 1 of 9 molecules. "Entropy changes then disorderness increases so, if ...nes molecules increases as decreases Hence, no of molecules neut changes. So entropy a does not change so, AS o.. - A Hoon - 4. from the answer #2 & #3 we can drite => Anxn a Horn 8. Ann = 66 Kg/mol. - from this value it is a non spontaneous reaction. But the dairing * force is breaking of fyth bend to from ot bind & Onito → H2O to leading the above " reaction being sponfawows. 16