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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

76.3 kJ

B

427 kJ

C

42.7 kJ

D

4.27 kJ

Text Solution

Verified by Experts

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