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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

763 kJ/mol

B

427 kJ/mol

C

336 kJ/mol

D

154 kJ/mol

Text Solution

Verified by Experts

The correct Answer is:
B
`DeltaH_(reaction)=B.E.(H_(2))+B.E.(Cl_(2))-2xxB.E.(HCl)`
`-182 =430 +242 -2 B.E (HCl)`
B.E (HCl) =427 kJ.
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