Part B The combustion of toluene has a Arxn of - 3.91 × 10³ kJ/mol. When 1.55 g of toluene (C7H8) undergoes combustion in a bomb calorimeter, the temperature rises from 23.12 °C to 37.57 ˚C. Find the heat capacity of the bomb calorimeter. Express the heat capacity in kilojoules per degree Celsius to three significant figures. Ccal = Submit VE ΑΣΦ - 271 Previous Answers Request Answer ? kJ/°C X Incorrect; Try Again; 5 attempts remaining You may have divided AErxn by the temperature change. However, qcal = Ccal × ΔΤ, so you must first calculate qcal based on the number of moles of toluene and then divide that by the temperature change to determine the heat capacity of the bomb calorimeter. Additionally, note that arxn=-qcal because the heat released by the reaction is absorbed by the calorimeter, so make certain you report your answer with the correct sign.

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Chapter1: Chemical Foundations
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Part B
The combustion of toluene has a Arxn of - 3.91 × 10³ kJ/mol. When 1.55 g of toluene
(C7H8) undergoes combustion in a bomb calorimeter, the temperature rises from 23.12 °C to
37.57 ˚C. Find the heat capacity of the bomb calorimeter.
Express the heat capacity in kilojoules per degree Celsius to three significant figures.
Ccal
=
Submit
VE ΑΣΦ
- 271
2
Previous Answers Request Answer
?
kJ/°C
X Incorrect; Try Again; 5 attempts remaining
You may have divided AErxn by the temperature change. However, qcal Ccal X AT,
so you must first calculate qcal based on the number of moles of toluene and then divide
that by the temperature change to determine the heat capacity of the bomb calorimeter.
Additionally, note that arxn = −qcal because the heat released by the reaction is
absorbed by the calorimeter, so make certain you report your answer with the correct
sign.
Transcribed Image Text:Part B The combustion of toluene has a Arxn of - 3.91 × 10³ kJ/mol. When 1.55 g of toluene (C7H8) undergoes combustion in a bomb calorimeter, the temperature rises from 23.12 °C to 37.57 ˚C. Find the heat capacity of the bomb calorimeter. Express the heat capacity in kilojoules per degree Celsius to three significant figures. Ccal = Submit VE ΑΣΦ - 271 2 Previous Answers Request Answer ? kJ/°C X Incorrect; Try Again; 5 attempts remaining You may have divided AErxn by the temperature change. However, qcal Ccal X AT, so you must first calculate qcal based on the number of moles of toluene and then divide that by the temperature change to determine the heat capacity of the bomb calorimeter. Additionally, note that arxn = −qcal because the heat released by the reaction is absorbed by the calorimeter, so make certain you report your answer with the correct sign.
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