Topic: question about calculate of enthalpy (Read 4527 times)

darien2009 · « **on:** October 01, 2009, 12:57:24 PM »

Hi everybody
hydrogen+ oxygen--> water vapor+ heat
calculate change of total energy (enthalpy)?

H-H =436
C-C =348
C-H = 410
C=O =743
O=O = 496
O-H = 463

sjb · « **Reply #1 on:** October 01, 2009, 01:05:45 PM »

Write a balanced equation for the reaction

Which bonds have you broken? Which have you made?

darien2009 · « **Reply #2 on:** October 02, 2009, 10:18:09 AM »

solution is: = -484 KJ/mol
Is it right or wrong?

sjb · « **Reply #3 on:** October 02, 2009, 01:21:32 PM »

Per mole of what? Oxygen? Hydrogen? Water?

darien2009 · « **Reply #4 on:** October 08, 2009, 06:57:13 AM »

to this following reaction :

H2+ O2 --> H2O

darien2009 · « **Reply #5 on:** November 26, 2009, 08:16:18 AM »

yes, to the reaction H2+O2--> H2O
I want the law to solution for this problem.

and thanks

darien2009 · « **Reply #6 on:** November 26, 2009, 09:56:18 AM »

which law is right?
H2-H1
or
H1-H2
1 for reactants
2 for products

Topic: question about calculate of enthalpy (Read 4527 times)

darien2009

question about calculate of enthalpy

sjb

Re: question about calculate of enthalpy

darien2009

Re: question about calculate of enthalpy

sjb

Re: question about calculate of enthalpy

darien2009

Re: question about calculate of enthalpy

darien2009

Re: question about calculate of enthalpy

darien2009

Re: question about calculate of enthalpy

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