Be sure to answer all parts. The standard enthalpies of formation of ions in aqueous solutions are obtained by arbitrarily assigning a value of zero to H ions; that is, AĦ° [H¹ (aq) ] = 0. (a) For the following reaction H₂O HCI(g) H* (aq) + CI (aq) calculate AH for the CIT ions. f -167.21 kJ/mol AH = -74.9 kJ/mol rxn (b) Given that AH for OH ions is -229.6 kJ/mol, calculate the enthalpy of neutralization when 1 mole of a strong monoprotic acid (such as HCI) is titrated by 1 mole of a strong base (such as KOH) at 25°C. -16.7 kJ/mol
Thermochemistry
Thermochemistry can be considered as a branch of thermodynamics that deals with the connections between warmth, work, and various types of energy, formed because of different synthetic and actual cycles. Thermochemistry describes the energy changes that occur as a result of reactions or chemical changes in a substance.
Exergonic Reaction
The term exergonic is derived from the Greek word in which ‘ergon’ means work and exergonic means ‘work outside’. Exergonic reactions releases work energy. Exergonic reactions are different from exothermic reactions, the one that releases only heat energy during the course of the reaction. So, exothermic reaction is one type of exergonic reaction. Exergonic reaction releases work energy in different forms like heat, light or sound. For example, a glow stick releases light making that an exergonic reaction and not an exothermic reaction since no heat is released. Even endothermic reactions at very high temperature are exergonic.
![Be sure to answer all parts.
The standard enthalpies of formation
a value of zero to H ions; that is, AH
(a) For the following reaction
H₂O
HCl(g)
calculate AH for the CI ions.
f
-167.21 kJ/mol
H* (aq) + CI (aq)
-16.7 kJ/mol
of ions in aqueous solutions are obtained by arbitrarily assigning
[H* (aq)] = 0.
0
AH°
rxn
= -74.9 kJ/mol
(b) Given that AH for OH ions is-229.6 kJ/mol, calculate the enthalpy of neutralization when 1 mole
f
of a strong monoprotic acid (such as HCI) is titrated by 1 mole of a strong base (such as KOH) at 25°C.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fb9abfb68-8e72-4551-93ea-7c2837d5dcac%2F828df4a9-accc-4cd1-a51d-bab8ef762211%2Fwzaum7d_processed.png&w=3840&q=75)
Trending now
This is a popular solution!
Step by step
Solved in 3 steps
