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The enthalpy of combustion of solid carbon to form carbon dioxide is 2393.7 kJ/mol carbon, and...

The enthalpy of combustion of solid carbon to form carbon dioxide is 2393.7 kJ/mol carbon, and the enthalpy of combustion of carbon monoxide to form carbon dioxide is 2283.3 kJ/ mol CO. Use these data to calculate DH for the reaction 2C + O2 > 2CO

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Expert Solution

C(s) + O2(g) -----------> CO2 (g)       H = -2393.7KJ/mole ---------------> 1

CO(g) +1/2 O2(g)   -----> CO2(g)   H    = -2283.3KJ/mole -------------> 2

equation 1 and 2 multifly with 2

2C(s) + 2O2(g) -----------> 2CO2 (g)       H = -4787.4KJ/mole

2CO(g) + O2(g)   -----> 2CO2(g)   H    = - 4566.6KJ/mole

(-)           (-)                    (-)                           (+)

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2C(s) + O2(g) -------------> 2CO(g)            H    = -220.8KJ     >>>>answer

queen_honey_blossom answered 2 years ago
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