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Ionic and Covalent Character

Formation of ...

Question

Formation of $C a O$ by Born-Haber cycle involves which of the following processes?

Sublimation of

C a

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Ionization of

C a

C a^{+ 2}

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Homolytic Bond dissociation of

O_{2}

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Electron Affinity of

O

O^{2 -}

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All of these.

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Solution

The correct option is C All of these.
Sublimation of $C a :$ $C a (s) \to C a (g)$

Ionization: $C a (g) \to C a^{2 +} (g)$

Homolytic Bond dissociation: $\frac{1}{2} O_{2} \to O (g)$

Electron Affinity: $O (g) \to O^{- 2} (g)$

$C a^{2 +} (g) + O^{2 -} (g) \to C a O (s)$

Hence, the correct option is $E$

Suggest Corrections

Similar questions

C a O

C a : [A r] 4 s^{2} ⟶ C a^{2 +} [A r] O : 1 s^{2} 2 s^{2} 2 p^{4} ⟶ O^{2 -} 1 s^{2} 2 s^{2} 2 p^{6} C a^{2 +} [: ¨ O \cdot \cdot :]^{2 -}

M g C l_{2}

M g

C l_{2}

M g

C l

- 233 k J / m o l

C s = + 78 k J / m o l

C s = + 375 k J / m o l

O_{2} (g) = 494 k J / m o l

O_{2}

O = - 141 k J / m o l

O = + 845 k J / m o l

O^{-}

C a O

C a + O_{2} \to C a O

C a C O_{3} (s) △ - \to C a O (s) + C O_{2} (g)

C a (O H)_{2} c a l c i n a t i o n - ----- \to C a O + H_{2} O

M g C l_{2}

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