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March 29, 2015

Homework Help: Chemistry

Posted by Chem Help on Thursday, November 13, 2008 at 7:23pm.

i tried to do like dis plz chk is it rite or wrong.

[2(4(327) + 495 ]- [ 2(4(327) + 523 ]
= -28

Bond enthalpy is the energy required to break a mole of a certain type of bond.

O=O = 495 kj/mol
S-F = 327 kj/mol
S=O = 523 kj/mol

Use average bond enthalpies to estimate the enthalpy delta H (rxn) of the following reaction:

2SF4 + O2 ---- 2OSF4

Express your answer numerically in kilojoules.

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