Question: I)Using the result of your calculation in (b), calculate the enthalpy of hydrogenation of butadiene, assuming the formula to be CH' = CHCH = CH2 ii The experimental value for this enthalpy change is -239KJ/mol. Suggest an explanation for the difference.

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I)Using the result of your calculation in (b), calculate the enthalpy of
hydrogenation of butadiene, assuming the formula to be
CH' = CHCH = CH2
ii The experimental value for this enthalpy change is -239KJ/mol. Suggest an explanation for the difference.

The following is a list of bond enthalpies at 298K.
AH/KJmol1.
Bond
+ 348
C- C
C = C
+612
bns
H-H
+ 436
C-H
+ 412
Transcribed Image Text:The following is a list of bond enthalpies at 298K. AH/KJmol1. Bond + 348 C- C C = C +612 bns H-H + 436 C-H + 412
b)
Using the bond enthalpies given above, calculate the enthalpy change of the reaction.
C2HAlg) + H2(g)
→C2H6(9)-
a a a
c)
In the reaction in (b), does the entropy decrease, increase or stay the same? Explain your
answer.
d) i)
Using the result of your calculation in (b), calculate the enthalpy of
hydrogenation of butadiene, assuming the formula to be
CH, = CHCH = CH2.
Transcribed Image Text:b) Using the bond enthalpies given above, calculate the enthalpy change of the reaction. C2HAlg) + H2(g) →C2H6(9)- a a a c) In the reaction in (b), does the entropy decrease, increase or stay the same? Explain your answer. d) i) Using the result of your calculation in (b), calculate the enthalpy of hydrogenation of butadiene, assuming the formula to be CH, = CHCH = CH2.
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