Anorganik suatu kuliah singkat reaksi ki

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By :

Dina Kartika Maharani, M.Sc

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Outline

 _{Ionic bonding}

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Syllabus

2 Memahami perbedaan jenis-jenis ikatan kimia dan memahami pembentukan senyawa kovalen, koordinasi, ionik.

Ikatan Kimia: Pendahuluan, Ikatan kovalen: Teori ikatan valensi,teori tolakan elektron kulit valensi, Teori orbital molekul, momen dipol. Ikatan koordinasi: Teori ikatan valensi, teori orbital molekul.

Ikatan ion: Sifat-sifat senyawa ionik, pembentukan senyawa ionik, radius rasio, energi kisi, kelarutan senyawa ionik, aturan Fajan, penyimpangan struktur ionik sederhana.

4 x 3 x 50 ‘ tatap muka

2 Memahami prinsip-prinsip dasar reaksi kimia, teori asam basa, kekuatan asam, proses pelarutan, reaksi dalam pelarut air dan non air.

Reaksi-reaksi kimia: Prinsip dasar reaksi kimia, teori– teori asam basa, kekuatan asam, proses pelarutan, reaksi dalam pelarut air dan non air.

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Ionic Bonds

 _{One or more}

electrons from 1

atom are removed and attached to another atom,

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

_{The positive sodium}

ion and the negative

chloride ion are

strongly attracted to

each other.

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Covalent

Ionic

Compounds

 _{Crystalline solids}  _{High melting and}

boiling points

 _Conduct

electricity when melted

 _{Poor electrical}

conductors

 _{Many soluble in}

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Ionic Crystal Formation

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Electrostatic Approach

 _{Interaksi ion-ion menurut gaya}

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Electrostatic Approach

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Coulomb Interaction in Ionic

Lattice

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 _{Tetapan Madelung A}

NaCl :

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 _{Energi kisi total melibatkan gaya tarik}

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Persamaan Born Lande

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Kapustinskii Equation

 _{Untuk kristal yang belum diketahui}

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

_{Dissolution of sodium chloride in water.}

_{Polar water molecules are}

attracted to Na+ and Cl

-ions in the salt or crystal, weakening the attraction between the ions.

_{As the attraction}

between the ions weakens, the ions move apart and become

surrounded by water dipoles.

_{The hydrated ions slowly}

diffuse away from the crystal to become dissolved in

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Solubility of Ionic Compound

 _{Ion size and charge : Hydration}

energy

 _{Electronic configuration}  _{Crystal structure of solid}

 _HSAB

 _{Covalent character in ionic bond :}

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Fajans rules : Polarization

 _{High charge and small cation}

polarizing power kation besar

mempolarisasi anion dengan kuat

 _{High charge and large anion}

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 _{Electronic configuration of cation}

kation dgn konf : (n-1)dx ns0 gol

transisi lebih mudah mempolarisasi daripada kation dgn konf (n-1)s2

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Pengaruh polarisasi

 _{Peningkatan kelarutan dalam pelarut}

polar seperti air

 _{AgF : sangat larut dalam air}

 _{AgCl : larut dalam air dengan bantuan}

ammonia

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Penyimpangan Struktur Kristal

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Transition Metal Gems

 _{Gemstone owe their color from trace}

transition-metal ions

 _{Gemstone owe their color from trace}

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Gemstones

 _{the colors of rubies and emeralds are}

both due to the presence of Cr3+ ions –

the difference lies in the crystal hosting the ion