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For the gaseous the reaction K (g) + F (...

For the gaseous the reaction` K (g) + F (g) to K^+ (g) + F^- (g), DeltaH` was calculated to be19 kcal under conditions when the electrostatic attraction was prevented. `IE_1` of K is 4.3 eV. Find the `EA_1` of F.

A

`"3.47 eV species "^(-1)`

B

`"0.30 eV species"(-1)`

C

`"3.50 eV species"^(-1)`

D

`"5.20 eV species "^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
A
`Delta H = 19kcal = (19)/(23.06) = 0.83eV "species"^(-1)`
` IE_1 = 4.3 eV "species"^(-1)`
`(-EA_1) = 4.30 - 0.83`
`(-EA_1) = 3.47eV "species"^(-1)`
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