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CHM1 12Example11 Collection

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Oct 18, 2019, 1:17:49 AM
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Oct 18, 2019, 1:17:49 AM
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Example 11

See the calculation on this YouTube video

Solution The heat energy absorbed by the calorimeter in increasing its temperature by 1.841 K is given by

q = C ?T = 6.745 kJ K–1 × 1.841 K = 12.42 kJ

Since this heat energy was released by the reaction system, we must regard it as negative. Accordingly,

qV = –12.42 kJ = ?U

We need now only to calculate the change in internal energy per mole, that is, ?Um. Now

/attachments/19bb31eb-f145-11e9-8682-bc764e2038f2/086f1868eb26c9154a1a3c70196b22fb.png
         

Thus      /attachments/19bb31eb-f145-11e9-8682-bc764e2038f2/380f77df70206d0af9b117e8435be986.png

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