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19.5 g of benzene on burning in the free...

19.5 g of benzene on burning in the free supply of oxygen liberated 126 kJ of energy at constant pressure. Calculate the enthalpy of combustion of benzene. Write the thermochemical equation. 

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19.5 grams of benzene on burning liberated 126 kJ.
78 grams of benzene on burning liberated 502 kJ.
The enthalpy of combustion of benzene is `-502 kJ mol^(-1)`. The thermochemical equation is given as, `C_6H_(6(l)) + 15/2O_(2(g)) to 6CO_(2(g)) + 3H_2O_((l)) , Delta = -502 kJ mol^(-1)`.
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AAKASH SERIES-CHEMICAL THERMODYNAMICS-PROBLEMS
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