Textbook 4A.11

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Lucy Wang 2J
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Textbook 4A.11

Postby Lucy Wang 2J » Sat Feb 20, 2021 1:31 pm

A calorimeter was calibrated with an electric heater, which supplied 22.5 kJ of energy as heat to the calorimeter and increased the temperature of the calorimeter and its water bath from 22.45 8C to 23.97 8C. What is the heat capacity of the calorimeter?

What does heat capacity of the calorimeter mean? And how would I go about solving this problem?

sabrina ghalambor 2J
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Re: Textbook 4A.11

Postby sabrina ghalambor 2J » Sat Feb 20, 2021 1:45 pm

i'm not 100% certain on the definition of the heat capacity of the calorimeter, but google says it the quantity of heat absorbed by the calorimeter for each temperature increase of 1 ˙C, which makes sense with the definition of C we've established with other compounds like liquid water or ice.

you would find heat capacity of the calorimeter by calculating 22.25 kJ/(23.97-22.45 ˙C) which equals 14.8 kJ/˙C ! hope this helps :)

Kaitlyn Hernandez 3I
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Re: Textbook 4A.11

Postby Kaitlyn Hernandez 3I » Sat Feb 20, 2021 2:41 pm

Heat capacity can be defined as the amount of heat that is required to raise the temperature of a certain substance. The equation to calculate heat capacity is q/delta T.

Kayla Law 2D
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Re: Textbook 4A.11

Postby Kayla Law 2D » Sat Feb 20, 2021 11:26 pm

Since heat capacity is the heat required to raise the temperature of an object by 1°C, then I believe that the heat capacity of a calorimeter is the amount of heat absorbed by the calorimeter that is required to raise the temperature by 1°C. Heat capacity of a calorimeter can be calculated using the equation C = q/ΔT where C is the heat capacity of the calorimeter, q is the heat absorbed by the calorimeter, and ΔT is the temperature change. Hope this helps! :)

Lily Kiamanesh 2G
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Re: Textbook 4A.11

Postby Lily Kiamanesh 2G » Sun Feb 21, 2021 12:27 am

Just like a substance has a heat capacity that determines how much heat is necessary to raise its temperature, a calorimeter that contains a reaction has a heat capacity. The temperature change in the calorimeter shows how much heat the reaction released or absorbed.

Linette Choi 3L
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Re: Textbook 4A.11

Postby Linette Choi 3L » Sun Feb 21, 2021 7:31 pm

Heat capacity looks for the amount of heat needed to raise the temperature by 1 degree, so to solve this we'd use the equal q=C*dT and get C= 1/dT. Then you'd plug in your q from the equation and find the change in temp to solve the problem.

Linette Choi 3L
Posts: 103
Joined: Wed Sep 30, 2020 9:51 pm

Re: Textbook 4A.11

Postby Linette Choi 3L » Sun Feb 21, 2021 7:31 pm

Heat capacity looks for the amount of heat needed to raise the temperature by 1 degree, so to solve this we'd use the equal q=C*dT and get C= 1/dT. Then you'd plug in your q from the equation and find the change in temp to solve the problem.


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