Heat absorbed by calorimeterand the NaCl solution, qabs, (kJ)Heat of reaction, qrxn, (kJ)Moles of H* used, (mol)Molarity of unknown solution, (M) EXPERIMENTAL DATAΔΗ-55.84 kJ/molneutralizationMass of dry calorimeter, (g)126.73Initial burette reading, (mL)0.31Final burette reading, (mL)14.31Initial temperature of HCI, (°C)22.30Initial temperature of NaOH, (°C)22.34Mass of calorimeter and NaCl solution, (g)156.89Extrapolated temperature, T;, (°C)38.26

The process is exothermic because ∆H is negative

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Heat absorbed by calorimeter and the NaCl solution, qabs, (kJ) Heat of reaction, qrxn, (kJ) Moles of H* used, (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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Question

Heat absorbed by calorimeter
and the NaCl solution, qabs, (kJ)
Heat of reaction, qrxn, (kJ)
Moles of H* used, (mol)
Molarity of unknown solution, (M)

EXPERIMENTAL DATA
ΔΗ
-55.84 kJ/mol
neutralization
Mass of dry calorimeter, (g)
126.73
Initial burette reading, (mL)
0.31
Final burette reading, (mL)
14.31
Initial temperature of HCI, (°C)
22.30
Initial temperature of NaOH, (°C)
22.34
Mass of calorimeter and NaCl solution, (g)
156.89
Extrapolated temperature, T;, (°C)
38.26

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