In a coffee cup calorimeter, 16.0 mL of 0.47 M nitric acid (HNO3) and 16.0 mL of 0.47 M potassium hydroxide (KOH) are mixed to observe the heat released during the neutralization reaction. Based on the data in the table, what is the enthalpy of the neutralization reaction between HNO3 and KOH? Initial temperature in the calorimeter (°C) AHrxn= 1.67 Incorrect Final temperature in the calorimeter (C) Final mass of the neutralized solution (g) Calorimeter constant (J/C)) 20.9 24.0 31.89 Attempt 2 4.89 kJ/mol

In a coffee cup calorimeter, 16.0 mL of 0.47 M nitric acid (HNO3) and 16.0 mL of 0.47 M potassium hydroxide (KOH) are mixed to observe the heat released during the neutralization reaction. Based on the data in the table, what is the enthalpy of the neutralization reaction between HNO3 and KOH? Initial temperature in the calorimeter (°C) AHrxn= 1.67 Incorrect Final temperature in the calorimeter (C) Final mass of the neutralized solution (g) Calorimeter constant (J/C)) 20.9 24.0 31.89 Attempt 2 4.89 kJ/mol

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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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

In a coffee cup calorimeter, 16.0 mL of 0.47 M nitric acid (HNO3) and 16.0 mL of 0.47 M potassium hydroxide (KOH) are
mixed to observe the heat released during the neutralization reaction. Based on the data in the table, what is the enthalpy of the
neutralization reaction between HNO3 and KOH?
AHrxn
1.67
Incorrect
Initial temperature in the calorimeter (°C)
Final temperature in the calorimeter (°C)
Final mass of the neutralized solution (g)
Calorimeter constant (J/C))
20.9
24.0
31.89
Attempt 2
4.89
kJ/mol

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