What is the value of sE ( internal energy) in kJ for the reaction? (10pts) (VCal

Question

What is the value of sE ( internal energy) in kJ for the reaction? (10pts) (VCalolate AH, in kd imal for benzene (Coltij from the flowing data: (10pts) (VI) Use the bond dissociation energies in Table 7 2 to clulate an spproximate AHi 2 to calculate an appeoeimate sH,n for the reaction of ethylene with hydrogen to yieid ethane. (10pts) Oxygen is sold in a 49.0L steel container at a pressure of 150 atm ) What volume in Liters would the gas occupy at a pressure of 1.02 atm i Temps mol of the gas remained constant? (10pts) was ra

Explanation / Answer

(V)

We know that

Delta H for the reaction = [sum of heat of formation for products] - [sum of heat of formation for reactants]

Delta H of reaction = [12 X Delta H of formation of CO2 + Delta H formatio of 6H2O] - [2x Delta H formation of C6H6]

(-6534) = [(12)(-393.5) + (6)(-285.8)] - (2 X delta H of formation of benzene)

(-6534) = -6436.8 - (2 X delta H of formation of benzene)

(2 X delta H of formation of benzene) = 97.2

delta H of formation of benzene) = +48.6 kJ,

(VI ) table not given

(VII) if temperature and moles are constant then

P1V1 = P2V2

P1 = 150 atm

V1 = 49 L

P2 = 1.02 atm

V2 = ?

V2 = 49 X 150 / 1.02 = 7205.88 L

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