Calculate the electron affinity of Br from following data :
Lattice energy of NaBr =-`736 "kJ mole" ^(-1)`
`B.E._((Br.Br))=192 "kJ mole"^(_1)`
`DeltaH_(f(NaBr))=-376"kJmole"^(-1)`
`(I.E.)_(Na)=490"kJ mole"^(-1)`
`DeltaH_(298K)` of sublemation of `Na=109 "kJ mole"^(-1)`

Calculate heat of solution of NaCl from the following data Hydration energy of Na^(+) = -389kJ mol^(-1) Hydration energy of Cl^(-) = -382kJ mol^(-1) Lattice energy of NaCl = +776 kJ mol^(-)

Calculate the resonance energy of N_(2)O from the following data: DeltaH_(1)^(@) of N_(2)O = 82 kJ "mole"^(-1) . Bond energies N=N = 946 kJ "mole"^(-1) N=N = 418 kJ "mole"^(-1) O=O = 498 kJ "mole"^(-1) N=O = 607 kJ "mole"^(-1)

Calculate the resonance energy of N_(2)O from the following data: DeltaH_(1)^(@) of N_(2)O = 82 kJ "mole"^(-1) . Bond energies N=N = 946 kJ "mole"^(-1) N=N = 418 kJ "mole"^(-1) O=O = 498 kJ "mole"^(-1) N=O = 607 kJ "mol"^(-1)

Calculate bond energy of X-X bond from the following data. DeltaH_(f) "of" X(g)=+300 kJ//"mole"

Calculate the free energy change when 1 mole of NaCl is dissolved in water at 298 K. (Given : Lattice energy of NaCl = -777.8 kJ mol^(-1) ), Hydration energy -774.1 kJ mol^(-1) and Delta S = 0.043 kJ mol^(-1) mol^(-1) at 298 K).

Construct a Born-Haber cycle and use it to calculate the first electron affinity of chlorine. DeltaH_(atom(CI))= +122 kJ mol^(-1) " " DeltaH_(atom(Mg))=+148 kJ mol^(-1) DeltaH_("1st ionisation energy" (Mg))=+738 KJ mol^(-1) " " DeltaH_(2nd " ionisation cnergy"(MgCI_(2))= +1451 kJ mol^(-1) DeltaH _("lattice energy "(MgCI_(2))= -2526 kJ mol^(-1) " " DeltaH_(2nd " formation "(MgCI_(2)) =-641 kJ mol^(-1)

Calculate the enthalpy change of 1 mole of reaction Na(s)+(1)/(2)Br_(2)(g)rarrNaBr(s) in kcal Given : Delta H_("sub")(Na)=137 kJ "mole"^(-1) , DeltaH_("bond dissociation")(Br_(2)(g))=144 kJ "mole"^(-1) Delta H_("1 st ionisation")(Na(g)=496 kJ "mole"^(-1) , Delta H_(1 st "electron affinity")(Br(g)=-325 kJ "mole"^(-1) Delta H_("Lattice energy")(NaBr)= +742

Calculate the enthalpy change of the reaction Na(s) + 1//2Br_(2)(g)rarr NaBr(s) DeltaH atomisation (Na) = +107 kJ mol^(-1) DeltaH atomisation (Br) = +97 kJ mol^(-1) DeltaH first ionisation energy (Na) = +496 kJ mol^(-1) DeltaH first electron affinity (Br) = -325 kJ mol^(-1) DeltaH lattice energy (NaBr) = -742 kJ mol^(-1)

Give the following information, calculate the lattice enthalpy of the sodium chloride lattice: Delta ("atomisation Na") = +107 kJ mol^(-1) " " DeltaH (1^(st) "ionisation Na") = + 496 kJ mol^(-1) Delta H ("bond dissociation " CI_(2)) = +242 kJ mol^(-1) " " Delta (1^(st) "electron affinity CI") =-349 kJ mol^(-1) DeltaH( NaCI) =-411 kJ mol^(-1)

Calculate the enthalpy change during the reaction : H_(2(g))+Br_(2(g))rarr 2HBr_((g)) Given, e_(H-H)=435kJ mol^(-1),e_(Br-Br)=192kJ mol^(-1) and e_(H-Br)=368kJ mol^(-1).