Magnitude of electron gain enthalpy of Iodine is 296 kJ/mole. Energy released when 12.7 grams of iodine vapours completely convert to gaseous iodide ions will be
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a
14.8 kJ
b
59.2 kJ
c
29.6 kJ
d
7.4 kJ
answer is C.
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Detailed Solution
Ig+e-→I-g , ∆egH =-296 kJ ; At.wt of Iodine = 127 ; 127 g release 296 kJ. 12.7 g release 'X' kJ. 'X' = 29.6 kJ ;
Magnitude of electron gain enthalpy of Iodine is 296 kJ/mole. Energy released when 12.7 grams of iodine vapours completely convert to gaseous iodide ions will be