if electron affinity of chlorine is 350 `kJ*mol^(-1)`, then what is the amount of energy liberated to convert 1.779g of chlorine (existing at atomic state) to chlroide ions completely (in gaseous state)?

Explanation

Atomic mass of clorine`=35.5g*mol^(-1)`
Energy liberated in the conversion of 35.5g of Cl to `CL^(-)` ion=350 kJ
`therefore` Energy liberated in the conversion of 1.775 g of Cl to `Cl^(-)`
ion`=(350)/(35.5)xx1.775=17.5kJ`.