Explain the heats of combustion of the elements

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Reference no: EM13542717

The enthalpy change for the reaction between W(s) and C(graphite) is difficult to measure directly because the reaction occurs at 1400degree C

W(s) + C(graphite) -- WC(s)

However the heats of combustion of the elements and of tungsten carbide can be measured and are given below:

2W(s) + 3O2(g)--2WOcube(S) delta H = -1680.6kJ

C(graphite) + O2(g) -- CO2(g) delta H = -393.5kJ

2WC(S) + 5O2(g) -- 2WO3(s) +2CO2(g) delta H +-2391.6kj

Reference no: EM13542717

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