Calculate the standard enthalpy of reaction, AHin, of each of the given acid-base neutralization reactions involving thestrong base KOH. The standard enthalpy of formation data are provided.Compound or Ion Standard Enthalpy of Formation (kJ/mol)KOH(aq)-482.4H,O()HCIO, (aq)-285.8-98.4KCIO, (aq)-349,5HBr(aq)-121.0KBr(aq)NH (aq)NH, (aq)K* (aq)-372.1-132.5-80.3-251.2HCIO, (aq) + KOH(aq)– KCIO, (aq) +H,O(1)AHn =kJ/molHBraq) + кон(aд) — КBr(aq)+ Н, о)AHin =kJ/molNH (aq) + KOН аq) — NH, (aq) + K* (аq) + Н, О)kJ/molAHxn =Based on the AHan values, what is the most likely conclusion about the strength of the acids?O HCIO, (aq) and HBr(aq) are weak acids, and NH (aq) is a strong acid.O HCIO, (aq) and HBr(aq) are strong acids, and NH (aq) is a weak acid.O HCIO, (aq), HBr(aq), and NH (aq) are all weak acids.O HCIO, (aq). HBr(aq), and NH (aq) are all strong acids.

To calculate the heat of enthalpy for the below acid-base neutralization reactions.…

Calculate the standard enthalpy of reaction, AH, of each of the given acid-base neutralization reactions involving the strong base KOH. The standard enthalpy of formation data are provided. Compound or Ion Standard Enthalpy of Formation (kJ/mol) KOH(ag) -482.4 H,O0) HCIO, (aq) KCIO, (aq) HBr(ag) -285.8 -98.4 -349.5 -121.0 KBr(ag) NH (aq) -372.1 -132.5 NH, (aq) K*(aq) -80.3 -251.2

Calculate the standard enthalpy of reaction, AH, of each of the given acid-base neutralization reactions involving the strong base KOH. The standard enthalpy of formation data are provided. Compound or Ion Standard Enthalpy of Formation (kJ/mol) KOH(ag) -482.4 H,O0) HCIO, (aq) KCIO, (aq) HBr(ag) -285.8 -98.4 -349.5 -121.0 KBr(ag) NH (aq) -372.1 -132.5 NH, (aq) K*(aq) -80.3 -251.2

Principles of Modern Chemistry

8th Edition

ISBN:9781305079113

Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Chapter15: Acid–base Equilibria

Section: Chapter Questions

Problem 7P

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Concept explainers

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.

Question

Calculate the standard enthalpy of reaction, AHin, of each of the given acid-base neutralization reactions involving the
strong base KOH. The standard enthalpy of formation data are provided.
Compound or Ion Standard Enthalpy of Formation (kJ/mol)
KOH(aq)
-482.4
H,O()
HCIO, (aq)
-285.8
-98.4
KCIO, (aq)
-349,5
HBr(aq)
-121.0
KBr(aq)
NH (aq)
NH, (aq)
K* (aq)
-372.1
-132.5
-80.3
-251.2
HCIO, (aq) + KOH(aq)
– KCIO, (aq) +H,O(1)
AHn =
kJ/mol
HBraq) + кон(aд) — КBr(aq)+ Н, о)
AHin =
kJ/mol
NH (aq) + KOН аq) — NH, (aq) + K* (аq) + Н, О)
kJ/mol
AHxn =
Based on the AHan values, what is the most likely conclusion about the strength of the acids?
O HCIO, (aq) and HBr(aq) are weak acids, and NH (aq) is a strong acid.
O HCIO, (aq) and HBr(aq) are strong acids, and NH (aq) is a weak acid.
O HCIO, (aq), HBr(aq), and NH (aq) are all weak acids.
O HCIO, (aq). HBr(aq), and NH (aq) are all strong acids.

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