### Calorimetry Problem: Heat of Combustion**Problem Statement:**The heat of combustion (ΔH) for an unknown hydrocarbon is -8.21 kJ/mol. If 0.344 mol of the hydrocarbon is burned in a bomb calorimeter, what is the change in temperature (°C) of the calorimeter? The heat capacity of the bomb calorimeter is 1.12 kJ/°C.**Analysis:**To calculate the change in temperature, use the formula:\[ q = m \times \Delta H \]Where:- \( q \) is the heat exchanged (in kJ),- \( m \) is the number of moles of the substance,- \( \Delta H \) is the heat of combustion per mole.1. Calculate the total heat released:\[ q = 0.344 \, \text{mol} \times (-8.21 \, \text{kJ/mol}) \]2. Use the formula for heat capacity to find the change in temperature:\[ \Delta T = \frac{q}{C} \]Where:- \( \Delta T \) is the change in temperature (°C),- \( C \) is the heat capacity of the calorimeter (kJ/°C).Calculate \( \Delta T \) by substituting the values for \( q \) and \( C \).This setup will allow students to practice their understanding of thermodynamics and calorimetry concepts.

∆H = -8.21kj/mol =-8210J/mol Since 1kj=1000j It means that during this process 8210 joule energy or heat is absorbed. Using Heat absorbed = moles*heat capacity*change in temperature putting all these values - Change in T = 8210/0.344(112)= 213.09 °C Here heat capacity is 1.12kj/mol or 112j/mol So this will be change in temperature.

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The heat of combustion (AH) for an unknown hydrocarbon is -8.21 kJ/mol. If 0.344 mol of the hydrocarbon is burned in a bomb calorimeter, what is the change in temperature (°C) of the calorimeter? The heat capacity of the bomb calorimeter is 1.12 kJ/°C.

The heat of combustion (AH) for an unknown hydrocarbon is -8.21 kJ/mol. If 0.344 mol of the hydrocarbon is burned in a bomb calorimeter, what is the change in temperature (°C) of the calorimeter? The heat capacity of the bomb calorimeter is 1.12 kJ/°C.

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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