Widiyanti 4301410001 Prita Sri Sulastri 4301410017 Puji Rahayu 4301410026 JURUSAN KIMIA FAKULTAS MATEMATIKA DAN ILMU PENGETAHUAN ALAM UNIVERSITAS NEGERI SEMARANG ENERGI KISI ID: 1022993
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1. ENERGI KISIDisusun oleh:Widiyanti (4301410001)Prita Sri Sulastri (4301410017)Puji Rahayu (4301410026)JURUSAN KIMIAFAKULTAS MATEMATIKA DAN ILMU PENGETAHUAN ALAMUNIVERSITAS NEGERI SEMARANG
2. ENERGI KISIAdalah :~ energi yang diperlukan untuk mengubah 1 mol senyawa ionik padatan menjadi ion-ionnya dalam fasa gas~ energi yang dilepaskan apabila ion (+) dan (-) dalam keadaan gas berubah menjadi padatan.
3. Persamaan Bohr-Lande
4. +--+-+-++-+-r3r6r2r5r
5. n tergantung pada konfigurasi elektron ion yang bersangkutanHarga n untuk kristal ionik selalu > 1Tabel harga nKonfigurasi e ionn2 (He)10 (Ne)18 (Ar)36 (Kr)54 (Xe)5791012
6. Contoh :Na+Cl-11Na : 1s2 2s2 2p6 3s1 Na+ : 1s2 2s2 2p6 e = 10Konfigurasi e Na+ = konf. e Ne sehingga n Na+ = 717Cl : 1s2 2s2 2p6 3s2 2p5 Cl- : 1s2 2s2 2p6 3s2 2p6 e = 18Konfigurasi e Cl- = konf. e Ar sehingga n Cl- = 9Jadi, n untuk NaCl = (7+9)/2 = 8
7. Giving its dependence on large contribution coming from nearest neighbours,the Madelung constant increases with coordination numberStructure typeACoordination numbersZnS blende1.6384NaCl1.7486CsCl1.7638
8. Born-Mayer equation
9. The use of the Born-Landé equation requires the knowledge of the structure of the compound (Madelung constant)If the structure of the compound is not known, or the Madelung constant is not available, the Kapustinskii equation can be used to calculate the lattice energyThe Kapunstinskii Equation
10. Born-Haber cycle
11. SOAL ....
12. Sublimation of LiIonization of LiDissociation of F2Electron affinity of FFormation of solid?
13. Terima Kasih