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The molar heat capacity of a substance is the
- a)quantity of heat needed to raise the temperature of one mole by one degree celsius
- b)quantity of heat needed to raise the temperature of one kilogram by one degree Fahrenheit
- c)quantity of heat needed to raise the temperature of one gram by one degree celsius
- d)quantity of heat needed to raise the temperature of one mole by one degree Fahrenheit
Correct answer is option 'A'. Can you explain this answer?
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The molar heat capacity of a substance is thea)quantity of heat needed...
The molar heat capacity of a substance is the quantity of heat needed to raise the temperature of one mole by one degree Celsius.
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The molar heat capacity of a substance is thea)quantity of heat needed...
The molar heat capacity of a substance refers to the quantity of heat needed to raise the temperature of one mole of the substance by one degree Celsius. This concept is important in thermodynamics and helps us understand how different substances absorb and store heat energy.
Explanation:
1. Molar heat capacity:
- Molar heat capacity is a measure of how much heat energy is required to raise the temperature of one mole of a substance by one degree Celsius.
- It is denoted by the symbol "C" and has the unit of J/mol·K (Joules per mole per Kelvin).
2. Heat energy and temperature change:
- Heat energy is the energy transferred from one object to another due to a temperature difference.
- When heat is added to a substance, its temperature increases, and when heat is removed, its temperature decreases.
- The amount of temperature change depends on the specific heat capacity of the substance.
3. Specific heat capacity:
- The specific heat capacity of a substance is the amount of heat energy required to raise the temperature of a given mass of the substance by one degree Celsius.
- It is denoted by the symbol "c" and has the unit of J/g·°C (Joules per gram per degree Celsius).
4. Molar heat capacity vs. specific heat capacity:
- Molar heat capacity and specific heat capacity are related but different concepts.
- Molar heat capacity is the heat energy required to raise the temperature of one mole of a substance, while specific heat capacity is the heat energy required to raise the temperature of a given mass of the substance.
- Molar heat capacity is expressed in terms of moles, while specific heat capacity is expressed in terms of grams.
5. Answer:
- Option A, "quantity of heat needed to raise the temperature of one mole by one degree Celsius," is the correct answer.
- The molar heat capacity is defined in terms of moles and represents the heat energy required to raise the temperature of one mole of a substance by one degree Celsius.
- This definition aligns with the concept of molar heat capacity and its unit of J/mol·K.
In summary, the molar heat capacity of a substance refers to the amount of heat energy needed to raise the temperature of one mole of the substance by one degree Celsius. It is different from the specific heat capacity, which measures the heat energy required to raise the temperature of a given mass of the substance.
Explanation:
1. Molar heat capacity:
- Molar heat capacity is a measure of how much heat energy is required to raise the temperature of one mole of a substance by one degree Celsius.
- It is denoted by the symbol "C" and has the unit of J/mol·K (Joules per mole per Kelvin).
2. Heat energy and temperature change:
- Heat energy is the energy transferred from one object to another due to a temperature difference.
- When heat is added to a substance, its temperature increases, and when heat is removed, its temperature decreases.
- The amount of temperature change depends on the specific heat capacity of the substance.
3. Specific heat capacity:
- The specific heat capacity of a substance is the amount of heat energy required to raise the temperature of a given mass of the substance by one degree Celsius.
- It is denoted by the symbol "c" and has the unit of J/g·°C (Joules per gram per degree Celsius).
4. Molar heat capacity vs. specific heat capacity:
- Molar heat capacity and specific heat capacity are related but different concepts.
- Molar heat capacity is the heat energy required to raise the temperature of one mole of a substance, while specific heat capacity is the heat energy required to raise the temperature of a given mass of the substance.
- Molar heat capacity is expressed in terms of moles, while specific heat capacity is expressed in terms of grams.
5. Answer:
- Option A, "quantity of heat needed to raise the temperature of one mole by one degree Celsius," is the correct answer.
- The molar heat capacity is defined in terms of moles and represents the heat energy required to raise the temperature of one mole of a substance by one degree Celsius.
- This definition aligns with the concept of molar heat capacity and its unit of J/mol·K.
In summary, the molar heat capacity of a substance refers to the amount of heat energy needed to raise the temperature of one mole of the substance by one degree Celsius. It is different from the specific heat capacity, which measures the heat energy required to raise the temperature of a given mass of the substance.
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The molar heat capacity of a substance is thea)quantity of heat needed to raise the temperature of one mole by one degree celsiusb)quantity of heat needed to raise the temperature of one kilogram by one degree Fahrenheitc)quantity of heat needed to raise the temperature of one gram by one degree celsiusd)quantity of heat needed to raise the temperature of one mole by one degree FahrenheitCorrect answer is option 'A'. Can you explain this answer?
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The molar heat capacity of a substance is thea)quantity of heat needed to raise the temperature of one mole by one degree celsiusb)quantity of heat needed to raise the temperature of one kilogram by one degree Fahrenheitc)quantity of heat needed to raise the temperature of one gram by one degree celsiusd)quantity of heat needed to raise the temperature of one mole by one degree FahrenheitCorrect answer is option 'A'. Can you explain this answer? for Class 11 2024 is part of Class 11 preparation. The Question and answers have been prepared according to the Class 11 exam syllabus. Information about The molar heat capacity of a substance is thea)quantity of heat needed to raise the temperature of one mole by one degree celsiusb)quantity of heat needed to raise the temperature of one kilogram by one degree Fahrenheitc)quantity of heat needed to raise the temperature of one gram by one degree celsiusd)quantity of heat needed to raise the temperature of one mole by one degree FahrenheitCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for Class 11 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The molar heat capacity of a substance is thea)quantity of heat needed to raise the temperature of one mole by one degree celsiusb)quantity of heat needed to raise the temperature of one kilogram by one degree Fahrenheitc)quantity of heat needed to raise the temperature of one gram by one degree celsiusd)quantity of heat needed to raise the temperature of one mole by one degree FahrenheitCorrect answer is option 'A'. Can you explain this answer?.
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