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The elecron affinity of chlorine is 3. 7...

The elecron affinity of chlorine is `3. 7 eV`. How much energy in kcal is released when `2g` chlorine is completely converted to `cl^-` ion in a gaseous state ?
`(1 eV = 23. 06 kcal "mol"^(-1))`.

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The correct Answer is:
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Energy released for the conversion of 2.0 g of gaseous chlorine to chloride ion `=(3.7 xx 23.06 xx 2)/(35.5)=4.9kcal`
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