Thermochemistry examples

Thermochemistry examples - CHE103 Thermochemistry Examples...

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CHE103 Thermochemistry Examples 1.) Determine Δ rxn Hº for the following reaction: CH 3 CO 2 H ( l ) + CH 3 OH ( l ) CH 3 CO 2 CH 3 ( l ) + H 2 O ( l ) Given the following Δ rxn Hº values: [A] CH 3 CO 2 H ( l ) + 2 O 2 (g) 2 CO 2 (g) + 2 H 2 O ( l ) Δ rxn Hº = -875.2 kJ/mol-rxn [B] 2 CH 3 OH ( l ) + 3 O 2 (g) 2 CO 2 (g) + 4 H 2 O ( l ) Δ rxn Hº = -1451.4 kJ/mol-rxn [C] 2 CH 3 CO 2 CH 3 ( l ) + 7 O 2 (g) 6 CO 2 (g) + 6 H 2 O ( l ) Δ rxn Hº = -3184.4 kJ/mol-rxn {answer: -8.7 kJ/mol-rxn } { the desired reaction is [A] + [B]/2 – [C]/2 } 2. ) Calculate Δ rxn Hº for this reaction of hydrazine with nitrogen dioxide:
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This note was uploaded on 02/24/2011 for the course CHEM 103 taught by Professor Stafcas during the Fall '10 term at Penn State.

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