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The electron gain enthalpy of chlorine i...

The electron gain enthalpy of chlorine is 348 kJ `mol^(-1)`. How much energy in kJ is released when 17.5 g of chlorine is completely converted into `Cl^(-)` ions in the gaseous state?

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`Cl(g)+ e^(-)toCl^(-)(g) /_\=348kj mol^(-1)`
For one mol e (35.5g)348kJ is released.
`:.` For 17.5 g chlorine `(348 kj)/(35.5cancelg)xx17.75cancelg` energy leased
`:.` The amount of energy released `=(348)/(2)=174 kJ`.
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