KI의 격자에너지

KI의 격자에너지

What is the lattice energy of KI?

 

 

sublimation energy for K is +90 kJ/mol

ionization energy for K is +419 kJ/mol

sublimation energy for I2 is +62 kJ/mol

dissociation energy for I2 is +151 kJ/mol

electron affinity for I is -295 kJ/mol

heat of formation for KI(s) is -328 kJ/mol

 

---------------------------------------------------

 

K(s) → K(g) ... +90

K(g) → K+(g) + e- ... +419

1/2 I2(s) → 1/2 I2(g) ... 1/2 × (+62)

1/2 I2(g) → I(g) ... 1/2 × (+151)

I(g) + e- → I-(g) ... -295

K+(g) + I-(g) → KI(s) ... ?

--------------------------------

K(s) + 1/2 I2(s) → KI(s) ... -328

 

(+90) + (+419) + (+62/2) + (+151/2) + (-295) + (?) = (-328)

-? = (+90) + (+419) + (+62/2) + (+151/2) + (-295) + (+328)

-? = 648.5

? = -648.5

 

 

K+(g) + I-(g) → KI(s) ... -649 kJ/mol

 

KI(s) → K+(g) + I-(g) ... +649 kJ/mol

( 설명 https://ywpop.tistory.com/3118 )

 

 

답: +649 kJ/mol

 

 

 

[ 관련 예제 https://ywpop.tistory.com/search/격자에너지%20계산%20기준문서 ]

 

 

 

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