`Delta_("sub")H=`………………..`+`………………. .

Use the following data to calculate Delta_("lattice")H^(@) for NaBr. Delta_("sub")H^(@) for sodium metal = 108.4 kJ "mol"^(-1) .Ionization enthalpy of sodium = 496 kJ "mol"^(-1) Electron gain enthalpy of bromine = -325 kJ "mol"^(-1) .Bond dissociation enthalpy of bromine = 192 kJ "mol"^(-1) . Delta_(f)^(H^(@)) for NaBr (s) = -360.1 kJ "mol"^(-1) .

Use the following data to calculate Delta_("lattice") H^(@) for NaBr. Delta_("sub")H^(@) for sodium metal =108.4 kJ mol^(-1) , ionization enthalpy of sodium =496 kJ mol^(-1) ., electron gain enthalpy of bromine =-325 kJ mol^(-1) bond dissociation enthalpy of bromine =192 kJ mol^(-1) , Delta _f H^(@) for NaBr(s) - 360 kJ mol^(-1) .

The bond dissociation energy depends upon the nature of the bond and nature of the molecule. If any molecule more than 1 bonds of similar nature are present then the bond energy reported is the average bond energy. Determine C-C and C-H bond enthalpy (in kJ/mol). Given: Delta_(f)H^(0) (C_(2)H_(6),g)= -85kJ//mol, Delta_(f) H^(0) (C_(3)H_(8), g)= -104kJ//mole, Delta_("sub")H^(0) (C,s)= 718kJ//mol , B.E. (H-H)= 436 kJ/mol,

The bond dissociation energy depends upon the nature of the bond and nature of the molecule. If any molecule more than 1 bonds of similar nature are present then the bond energy reported is the average bond energy. Determine C-C and C-H bond enthalpy (in kJ/mol). Given: Delta_(f)H^(0) (C_(2)H_(6),g)= -85kJ//mol, Delta_(f) H^(0) (C_(3)H_(8), g)= -104kJ//mole, Delta_("sub")H^(0) (C,s)= 718kJ//mol , B.E. (H-H)= 436 kJ/mol,

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

For an ideal solution, Delta_(mix)V is ……….and Delta_(mix)H is ………. .

For an ideal solution, Delta_(mix)V is ……….and Delta_(mix)H is ………. .

The expression Delta_("sub"1)H^(Theta) =Delta_(fus)H^(Theta) +Delta_(vap)H^(Theta) is true at al