For the gaseous reaction `K + F rarr K^(+) +F^(-), Deltah` was calculated to be `18.4` kcal/mol under conditions where the cations and anions were pre

Question

For the gaseous reaction `K + F rarr K^(+) +F^(-), Deltah` was calculated to be `18.4` kcal/mol under conditions where the cations and anions were pre

For the gaseous reaction `K + F rarr K^(+) +F^(-), Deltah` was calculated to be `18.4` kcal/mol under conditions where the cations and anions were preverted from combining with each other. The ionisation enthalpy of `K` is 4.3 eV/atom. What is the electron gain enthalpy of F (in eV)? If your answer is `x` report it as `-2x`.

Monjur Alahi

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2025-01-04 04:42

1 Answers

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Salim Ahmed Kawsar · Accepted Answer · 2023-02-05T15:29:48+06:00

Salim Ahmed Kawsar

`{:(K(g)+F(g)rarrF^(-)(g)+K^(+)(g),,DeltaH =18.4 kCal =0.8 eV),(K(g)rarrK^(+)(g)+e^(-),,IE = 4.3 eV),(F(g)+e^(-)rarrF^(-)(g),,Delta_(eg)H =IE -DeltaH = 0.8 -4.3 =- 3.5 eV),(x =- 3.5,,),(2x =7,,):}`

6 views Answered 2023-02-05 15:29