Chemistry
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ISBN: 9781305957404
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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![A **bomb calorimeter**, or constant volume calorimeter, is a device often used to determine the heat of combustion of fuels and the energy available from foods.
Since the "bomb" itself can absorb energy, a separate experiment is needed to determine the heat capacity of the calorimeter. This is known as **calibrating** the calorimeter.
In the laboratory, a student burns a **0.983-g** sample of **glutaric acid (C₅H₈O₄)** in a bomb calorimeter containing **1170. g** water. The temperature increases from **24.10 °C** to **26.90 °C**. The specific heat capacity of water is **4.184 J g⁻¹ °C⁻¹**.
The combustion enthalpy is **–2151 kJ/mol** glutaric acid.
\[ \text{C}_5\text{H}_8\text{O}_4(s) + 5 \text{O}_2(g) \longrightarrow 5 \text{CO}_2(g) + 4 \text{H}_2\text{O}(l) \quad \Delta H^\circ = -2151 \text{ kJ/mol} \]
**Calculate the heat capacity of the calorimeter.**
\[
\text{heat capacity of calorimeter} = \boxed{\hspace{20mm}} \, \text{J/°C}
\]](https://content.bartleby.com/qna-images/question/82edbe16-4c8a-42ae-87ea-35dcde4bde96/a5712bd6-0089-4bb8-8d0c-6853a5c36730/bg0kuo_processed.png)
Transcribed Image Text:A **bomb calorimeter**, or constant volume calorimeter, is a device often used to determine the heat of combustion of fuels and the energy available from foods.
Since the "bomb" itself can absorb energy, a separate experiment is needed to determine the heat capacity of the calorimeter. This is known as **calibrating** the calorimeter.
In the laboratory, a student burns a **0.983-g** sample of **glutaric acid (C₅H₈O₄)** in a bomb calorimeter containing **1170. g** water. The temperature increases from **24.10 °C** to **26.90 °C**. The specific heat capacity of water is **4.184 J g⁻¹ °C⁻¹**.
The combustion enthalpy is **–2151 kJ/mol** glutaric acid.
\[ \text{C}_5\text{H}_8\text{O}_4(s) + 5 \text{O}_2(g) \longrightarrow 5 \text{CO}_2(g) + 4 \text{H}_2\text{O}(l) \quad \Delta H^\circ = -2151 \text{ kJ/mol} \]
**Calculate the heat capacity of the calorimeter.**
\[
\text{heat capacity of calorimeter} = \boxed{\hspace{20mm}} \, \text{J/°C}
\]
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