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Topic: Calorimetry  (Read 8228 times)

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Offline sabah

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Calorimetry
« on: October 20, 2008, 10:38:10 AM »
Consider the reaction

C12H22O11(s) + 12O2(g) ---> 12CO2(g) + 11H2O(l)

in which 10.0 g of sucrose,C12H22O11 , was burned in a bomb calorimeter with a heat capacity of 7.50 kj/C. The temperature increase inside the calorimeter was found to be 22.0 C. Calculate the change in internal energy, Delta E, for this reaction per mole of sucrose.

Express your answer numerically in kilojoules per mole.

THIS IS MY ANSWER: WHICH IS WRONG

heat generated = 22.0 C * 7.50 kJ/C = 16.5 kJ

kJ/mole sucrose = heat generated * (10.0 g sucrose / MW sucrose g/mole) = 0.48

Offline Astrokel

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Re: Calorimetry
« Reply #1 on: October 20, 2008, 11:21:28 AM »
Quote
kJ/mole sucrose = heat generated * (10.0 g sucrose / MW sucrose g/mole) = 0.48
Check your units!
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