3 part question: carbon monoxide gas reacts with oxygen gas to yield carbon diox

Question

3 part question: carbon monoxide gas reacts with oxygen gas to yield carbon dioxide gas: A). Write a balanced equation for this reaction: 2 CO(g) + O2(g) right arrow 2CO2 (g) B). Given the following bond energies, calculate the enthalpy change for the balanced equation: BE(C- - -0) = 1074 Kj/mol BE(0 - -0) = 499 Kj/mol Be (C- -0) = 802 Kj/mol C). Given the following standard enthalpies of formation at 298k and 1 atm, calculate the standard enthalpy change for the balanced equation Delta H degree f for CO(g) = -110.525 Kj/mol Delta H degree f for CO2(g) = -393.509 Kj/mol

Explanation / Answer

CO (g) + 1/2 O2 =C O2

A] OF 2

enthalpy change = BE of CO+ 1/2BE of O2 or 1074KJ/mol+1/2x499KJ/mol =1323.5 KJ/mol-2xBE ofCO2 =-561

A]of 3

C+O2= CO2 H=-393.509

C+ 1/2 O2= CO H=-110.525

CO+O2=CO2

2CO=2C +O2 H=+221.050

2C+ 2O2 =2CO2 H=-787.018

2CO+ O2 =2CO2

so H= -565.968KJ/mol

=

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