Learning Path
Question & Answer1
Understand Question2
Review Options3
Learn Explanation4
Explore TopicChoose the Best Answer
A
The substance has a high enthalpy of combustion
B
The substance is stable and has low energy content
C
The reaction absorbs heat from the surroundings
D
The calorimeter is malfunctioning
Understanding the Answer
Let's break down why this is correct
Answer
A large rise in the bomb calorimeter’s temperature means that the substance released a lot of heat when it was burned. This tells us the compound has a high energy or calorific value, so it contains a lot of chemical bonds that can release energy. In practice, a big temperature jump shows that the combustion reaction was vigorous and the substance is a good fuel. For example, burning a small amount of gasoline in the calorimeter can raise the water temperature by more than 100 °C, showing its high energy content.
Detailed Explanation
When a substance burns in a sealed bomb, it releases heat. Other options are incorrect because Thinking a stable substance gives a big temperature change is wrong; If heat were absorbed, the water would cool, not warm.
Key Concepts
Bomb Calorimetry
Enthalpy of Combustion
Topic
Bomb Calorimetry
Difficulty
hard level question
Cognitive Level
understand
Practice Similar Questions
Test your understanding with related questions
1
Question 1In designing a bomb calorimeter, which material property is most crucial for ensuring precise temperature measurements during calibration and subsequent combustion tests?
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Practice
2
Question 2When a substance is burned in a calorimeter, how does the temperature change relate to the energy released during combustion?
easyChemistry
Practice
3
Question 3When determining the heat of combustion for a fuel in a bomb calorimeter, which factor primarily influences the accuracy of the energy measurement obtained?
easyChemistry
Practice
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