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Use the Bond Enthalpies Given to Estimate the Heat Released

Question 142

Multiple Choice

Use the bond enthalpies given to estimate the heat released when ethene, CH2=CH2,Reacts with HBr to give CH3CH2Br.
Bond enthalpies (kJ.mol-1 ) : C-H,412; C-C,348; C=C,612; C-Br,276; Br-Br,193; H-Br,366.


A) 1036 kJ.mol-1
B) 200 kJ.mol-1
C) 470 kJ.mol-1
D) 424 kJ.mol-1
E) 58 kJ.mol-1

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