A 300.0 mL solution of 0.100 M hydrobromic acid, HBr(aq), is added to a 100.0 mL solution of 0.300 M potassium hydroxide, KOH(aq), in a constant pressure calorimeter with a heat capacity of 720. J K−1 (before adding solutions) . The enthalpy of reaction is −154 kJ mol−1. What is the change in temperature (final temperature minus initial temperature, in °C) for this calorimetry experiment? Assume that the solutions, when combined, have the density and specific heat capacity of pure water: 1.00 g mL−1 and 4.18 J K−1 g−1, respectively.

Molarity of HBr = 0.100 M Volume of HBr = 300 mL = 0.30 L Moles of HBr = M × V = 0.10 × 0.30 =…

Answered: hydrobromic acid, HBr(aq), is added to…

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

Chapter6: Thermochemistry

Section: Chapter Questions

Problem 127CWP: In a coffee-cup calorimeter, 150.0 mL of 0.50 M HCI is added to 50.0 mL of 1.00 M NaOH to make 200.0...

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A 300.0 mL solution of 0.100 M hydrobromic acid, HBr(aq), is added to a 100.0 mL solution of 0.300 M potassium hydroxide, KOH(aq), in a constant pressure calorimeter with a heat capacity of 720. J K⁻¹ (before adding solutions) . The enthalpy of reaction is −154 kJ mol⁻¹. What is the change in temperature (final temperature minus initial temperature, in °C) for this calorimetry experiment? Assume that the solutions, when combined, have the density and specific heat capacity of pure water: 1.00 g mL⁻¹ and 4.18 J K⁻¹ g⁻¹, respectively.

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