Questions
Ionization enthalpy of sodium = 492 kJ/mole;
Electron gain enthalpy of chlorine = -349 kJ/mole;
Sublimation enthalpy of sodium = +108 kJ/mole ;
Bond dissociation enthalpy of chlorine = +243 kJ/mole ;
Change in enthalpy for the process, will be
detailed solution
Correct option is B
Nas→Nag, ∆H=+108 kJ...............1 Nag→Na+g+e, ∆H=+492 kJ................2 12Cl2g→Clg, ∆H=+121.5 kJ/mole....3 Clg+e→Cl-g, ∆H=-349 kJ................4 Adding 1 ,2, 3and 4 Nas+12Cl2g→Na+g+Cl-g, ∆H=+372.5 kJ ;Talk to our academic expert!
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