lattice enthalpy Flashcards

1
Q

paulings rule 2

A

In a stable ionic structure, the charge on an ion is balanced by the sum of electrostatic bond strengths to the ions in its coordination polyhedron

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2
Q

. A stable ionic structure must be arranged…..

A

arranged to preserve Local Electroneutrality

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3
Q

how are replusive forces limited in a coordination polyhedra

A

Ions in a crystal are surrounded by ions of opposite charge so as not to produce large volumes of similar charge in the crystal

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4
Q

Lattice Enthalpy of dissociation

A

The standard molar enthalpy change from formation of a gaseous ions from the solid

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5
Q

Lattice Enthalpy of formation

A

The standard molar enthalpy change from formation of a solid from gaseous ions

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6
Q

how to calculate lattice enthalpy?

A

the born-mayer formula

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7
Q

born mayer formula

A

avogardo*[ZaZb]e-^2/4pied0
*
(1-d/d0)A

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8
Q

Madelung constant

A

Madelung constant is the electrostatic contribution to the energy of the crystal.

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