1.

Use the bond energies in the table to estimate DeltaHfor this reaction . H_(2)C=CH_(2)+Cl_(2)toClH_(2)C-CH_(2)Cl {:overset("Bond energies")((C-C,347KJmol^(-1)),(C=C,612KJmol^(-1)),(c-Cl,331KJmol^(-1)),(C-H,414KJmol^(-1)),(Cl-Cl,243KJmol^(-1))):}

Answer»

`DeltaH=-684KJ`
`DeltaH=-154KJ`
`DeltaH=+89KJ`
`DeltaH=+177KJ`

ANSWER :B


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