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Heat evolved in the reaction H(2)+Cl(2...

Heat evolved in the reaction
`H_(2)+Cl_(2) rarr 2HCl` is 182 kJ Bond energies H- H = 430 kJ/mole, `Cl-Cl = 242kJ//"mole"`. The H-Cl bond energy is

A

`245KJmol^(-1)`

B

`427KJmol^(-1)`

C

`336KJmol^(-1)`

D

`154KJmol^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
B
`DeltaH=-2xxvarepsilon_(H-Cl)+varepsilon_(H-H)+varepsilon_(Cl-C)`
`:. 182=-2xxa++430+242`
`:. a=245KJmol^(-1)`
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