Answer:
Usually give off heat energy
Explanation:
Exergonic reactions are the ones which are spontaneous. Spontaneous reactions are indicated by the negative change in the Gibbs free energy. In order to provide characteristics for an exergonic reaction, we need to define the Gibbs free energy in terms of the enthalpy change and the entropy change:
Here:
is the enthalpy change;
is the entropy change;
is the absolute temperature.
In order to achieve a negative value in the Gibbs free energy change, we should have:
This is true for all temperatures if:
The major term here is the change in enthalpy, notice that we wish the enthalpy change to be negative.
Negative enthalpy change corresponds to an exothermic reaction, the one which releases heat. This means exergonic reactions would usually give off heat.
On the left (reactant) side you have 6 N-H bonds and 1 Cl-Cl bond
<span>On the right (product) side you have 4 N-H bonds, 1 N-N bond and 2 H-Cl bonds </span>
<span>Add up the bond energies for each side (multiplying by the number of bonds) and calculate the difference for your ΔHº</span>
Elements are substances made up of identical atoms.
The equation for the autoionization of water is-
NH3 + H2O → NH4+ + OH− (H2O acts as an acid)
HCl + H2O → H3O+ + Cl− (H2O acts as a base)
<h3>
What do you mean by the autoionization of water ?</h3>
Autoionization of water, the autoionization constant Kw, and the relationship between [H⁺] and [OH⁻] in aqueous solutions.
Water can undergo autoionization to form and ions.
The expression for the autoionization constant is
![The expression for the autoionization constant isK_\text{w}=[\text{H}_3\text{O}^+][\text{OH}^-]\quad\quad\text{(Eq. 1)}K w =[H 3 O + ][OH − ]](https://tex.z-dn.net/?f=The%20expression%20for%20the%20autoionization%20constant%20isK_%5Ctext%7Bw%7D%3D%5B%5Ctext%7BH%7D_3%5Ctext%7BO%7D%5E%2B%5D%5B%5Ctext%7BOH%7D%5E-%5D%5Cquad%5Cquad%5Ctext%7B%28Eq.%201%29%7DK%20w%E2%80%8B%20%3D%5BH%203%E2%80%8B%20O%20%2B%20%5D%5BOH%20%E2%88%92%20%5D)
In this way the autoionization of water,
NH3 + H2O → NH4+ + OH− (H2O acts as an acid)
HCl + H2O → H3O+ + Cl− (H2O acts as a base) is given.
Learn more about autoionization process ,here:
brainly.com/question/14993418
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