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1)Using average bond enthalpies, predict which of the following reactions will be most exothermic: a) C(g) +...

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Chemistry

1)Using average bond enthalpies, predict which of the followingreactions will be most exothermic:

a) C(g) + 2 F2(g)

b) CO(g) +3 F2(g) CF4(g) + OF2(g)

c) CO2(g) + 4 F2(g) CF4(g) + 2 OF2(g)

2) Ammonia is produced directly from nitrogen and hydrogen. Thechemical reaction is N2(g) + 3 H2(g) 2 NH3(g)

N≡N

a) Use Table 8.4 p 326 in textbook (or you can find the table inthe chapter 5 slides on the UR course), to estimate the enthalpychange using the bond enthalpy for the reaction. Is it exothermicor endothermic?

b) Calculate the standard enthalpy change for this reaction,using standard enthalpies of formation ΔHf°.

Answer & Explanation Solved by verified expert
4.0 Ratings (616 Votes)
1 a answer Cg 2 F2g most exothermic delta H 925 kJ i got for b 789 kJ and for c 875 kJ i calculated 2 a from bond enthalphy    See Answer
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