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Heat of reaction at constant volume is m...

Heat of reaction at constant volume is measured in the apparatus

A

Bomb calorimeter

B

Calorimeter

C

Pyknometer

D

Pyrometer

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The correct Answer is:
To solve the question about how the heat of reaction at constant volume is measured, we can follow these steps: ### Step-by-Step Solution: 1. **Understanding the Concept**: The heat of reaction at constant volume refers to the amount of heat released or absorbed during a chemical reaction when the volume of the system does not change. 2. **Identifying the Apparatus**: The apparatus used to measure the heat of reaction at constant volume is known as a bomb calorimeter. This device is designed to withstand high pressures and is used for combustion reactions. 3. **Function of the Bomb Calorimeter**: In a bomb calorimeter, a known mass of the substance (usually a fuel) is placed in a sealed container (the bomb). The bomb is then filled with oxygen and ignited. The combustion reaction occurs at constant volume, and the heat released from the reaction is measured. 4. **Measurement Process**: The heat released during the reaction increases the temperature of the surrounding water in the calorimeter. By measuring the temperature change of the water, we can calculate the heat of reaction using the specific heat capacity of water and the mass of water used. 5. **Conclusion**: Therefore, the correct answer to the question about the apparatus used to measure the heat of reaction at constant volume is the bomb calorimeter. ### Final Answer: The heat of reaction at constant volume is measured using a **bomb calorimeter**. ---
To solve the question about how the heat of reaction at constant volume is measured, we can follow these steps: ### Step-by-Step Solution: 1. **Understanding the Concept**: The heat of reaction at constant volume refers to the amount of heat released or absorbed during a chemical reaction when the volume of the system does not change. 2. **Identifying the Apparatus**: The apparatus used to measure the heat of reaction at constant volume is known as a bomb calorimeter. This device is designed to withstand high pressures and is used for combustion reactions. ...
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