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

Answer

245

Explanation

`DeltaH = -2 xx e_(H - Cl) + e_(H - H) + e_(Cl - Cl)`
`:. 182 = -2 xx a + 430 + 242`
`:.a=245 kJ mol^(-1)`.