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The electron gain enthalpy of chlorine i...

The electron gain enthalpy of chlorine is `–349 kJ mol^(–1)` . How much energy in kJ is released when 3.55 g of chlorine is converted completely into `Cl^(–1)` ion in the gaseous state?

Text Solution

Verified by Experts

From the definition of electron gain enthalpy, we may write :
`Cl (g) + e ^(-) (g) to Cl ^(-) (g) Delta H=- 349 kJ mol^(-1)`
Energy releases ehen `35.5 ` g (1 mole) of chlorine is completely converted to `CI^(-) (g)` ions `= 349 kJ.`
Energy released when `1.0g` of chlorine is completely
converted to `Cl ^(-) (g)` ions
` = (349)/(35.5) xx 1 9. 83 kJ`
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