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Heat of reaction equations. Using simultaneous equations. Simultaneous equations. GIVEN: Δ H A + B = C-50 D + E = F+24 F + C = H???. Simultaneous equations. GIVEN: Δ H A + B = C-50 D + E = F+24 F + C = A+ B + C + D???. Simultaneous equations. - PowerPoint PPT Presentation

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• Heat of reaction equationsUsing simultaneous equations

• Simultaneous equationsGIVEN:HA + B = C-50D + E = F+24F + C = H???

• Simultaneous equationsGIVEN:HA + B = C-50D + E = F+24F + C = A+ B + C + D???

• Simultaneous equationsGIVEN:HA + B = C-50D + E = F+24A+ B + E + D= H -26

• INTERPRETING DATA

• INTERPRETING DATA

• INTERPRETING DATA

• INTERPRETING DATA

• Using this to solve an unknown reaction Q6(e) The combustion of Butene C4H8 is described by the following balanced equation.C4H8 + 6O2 4CO2 + 4H2OH = 2710 kJ mol1

The standard heats of formation of water and carbon dioxide are 286 and 394 kJ mol1, respectively.Calculate the heat of formation of C4H8

• What have we been told?? Q6(e) The combustion of Butene C4H8 is described by the following balanced equation.C4H8 + 6O2 4CO2 + 4H2OH = 2710 kJ mol1

This is the energy given out when butene is burned in oxygen

• What have we been told?? Q6(e) The combustion of one of Butene C4H8 is described by the following balanced equation.C4H8 + 6O2 4CO2 + 4H2OH = 2710 kJ mol1

The standard heats of formation of water and carbon dioxide are 286 and 394 kJ mol1, respectively.Calculate the heat of formation of C4H8

• What have we been told??

The standard heats of formation of water and carbon dioxide are 286 and 394 kJ mol1, respectively.H = kJ mol1 H2 + O2 H2O -286C + O2 CO2 -394

• What do we need to know?4C + 4H2 C4H8H = ???

Using all the given info one has to manipulate the given formulas to leave the needed one.

The question seeks to answer if the formation of butene is exothermic or endothermic

• Whats next?Write down all the info you have.

H = kJ mol1 H2 + O2 H2O -286C + O2 CO2 -394C4H8 + 6O2 4CO2 + 4H2O 2710

• Whats next?Write down all the info you have.

H = kJ mol1 H2 + O2 H2O -286C + O2 CO2 -394C4H8 + 6O2 4CO2 + 4H2O 2710

4C + 4H2 C4H8H = ???

• Whats next?H = kJ mol1 H2 + O2 H2O -286C + O2 CO2 -394C4H8 + 6O2 4CO2 + 4H2O 2710

4C + 4H2 C4H8H = ???

• Whats next?H = kJ mol1 H2 + O2 H2O -286C + O2 CO2 -394C4H8 + 6O2 4CO2 + 4H2O 2710

4CO2 + 4H2O C4H8 + 6O2 2710

4C + 4H2 C4H8H = ???

• Whats next?H = kJ mol1 H2 + O2 H2O -286C + O2 CO2 -394C4H8 + 6O2 4CO2 + 4H2O 2710

4CO2 + 4H2O C4H8 + 6O2 2710 4C + 4O2 4CO2 -1576

4C + 4H2 C4H8H = ???x4

• Whats next?H = kJ mol1 H2 + O2 H2O -286C + O2 CO2 -394C4H8 + 6O2 4CO2 + 4H2O 2710

4CO2 + 4H2O C4H8 + 6O2 2710 4C + 4O2 4CO2 -15764H2 + 2O2 4H2O -1144

4C + 4H2 C4H8H = ???x4

• Whats next?

H = kJ mol1 4CO2 + 4H2O C4H8 + 6O2 2710 4C + 4O2 4CO2 -15764H2 + 2O2 4H2O -1144

4C + 4H2 C4H8H = ???

• Whats next?4C + 4H2 C4H8H = ???

• Whats next?4C + 4H2 C4H8H = ???

• Whats next?4C + 4H2 C4H8H = ???

• Whats next?4C + 4H2 C4H8H = ???

• Whats next?4C + 4H2 C4H8H = ???

• Whats next?4C + 4H2 C4H8H = ???

• Whats next?4C + 4H2 C4H8H = ???

• Whats next?4C + 4H2 C4H8H = ???

• Whats next?4C + 4H2 C4H8H = ???

• Whats next?4C + 4H2 C4H8H = ???

• Whats next?4C + 4H2 C4H8H = ???

• Whats next?4C + 4H2 C4H8H = ???