The bond energies of `H--H` , `Br--Br` and `H--Br` are `433,, 192` and `364KJmol^(-1)` respectively. The `DeltaH^(@)` for the reaction `H_(2)(g)+Br_(2)(g)rarr2HBr(g)` isA. `-261 KJ`B. `+103 KJ`C. `+261 KJ`D. `-103 KJ`

The bond energies of `H--H` , `Br--Br` and `H--Br` are `433,, 192` and

1.	The bond energies of `H--H` , `Br--Br` and `H--Br` are `433,, 192` and `364KJmol^(-1)` respectively. The `DeltaH^(@)` for the reaction `H_(2)(g)+Br_(2)(g)rarr2HBr(g)` isA. `-261 KJ`B. `+103 KJ`C. `+261 KJ`D. `-103 KJ`
Answer» Correct Answer - D For reaction , `H_(2)(g) + Br_(2)(g) to 2HBr(g) DeltaH^(@)=?` `DeltaH^(@) =- [(2xx` bond energy of HBr )-(bond energy of `H_(2) + ` bond energy of `Cl_(2))]` `DeltaH^(@)=-[2xx(364)-(433+ 192)]KJ` `=-[728-(625)] KJ =-103 KJ`

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The bond energies of `H--H` , `Br--Br` and `H--Br` are `433,, 192` and `364KJmol^(-1)` respectively. The `DeltaH^(@)` for the reaction `H_(2)(g)+Br_(2)(g)rarr2HBr(g)` isA. `-261 KJ`B. `+103 KJ`C. `+261 KJ`D. `-103 KJ`

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