Ionisation energy of Al to Al 3-5137 kJ mol -1H hydration of - Al 3-4665 kJ mol -1 and for Cl -381 kJ mol -1 - Which of the following statement is correct-A- AlCl 3 would remain covalent in aqueous solutionB- Only at infinite dilution AlCl 3 undergoes ionisationC- In aqueous solution AlCl 3 becomes ionicD- None of these

The correct option is C In aqueous solution AlCl_3 becomes ionic nbsp;If AlCl_3 is present in ionic state in aqueous solution, therefore it has Al^3+ and 3C ...

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Byju's Answer

Standard XII

Chemistry

Heat of Formation

Ionisation en...

Question

Ionisation energy of $A l t o A l^{3 +} = 5137 k J m o l^{- 1} △ H_{h y d r a t i o n} o f : A l^{3 +} = - 4665 k J m o l^{- 1} a n d f o r C l^{-} = - 381 k J m o l^{- 1} .$ Which of the following statement is correct?

A l C l_{3}

would remain covalent in aqueous solution

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Only at infinite dilution

A l C l_{3}

undergoes ionisation

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In aqueous solution

A l C l_{3}

becomes ionic

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None of these

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Solution

The correct option is C In aqueous solution $A l C l_{3}$ becomes ionic
If $A l C l_{3}$ is present in ionic state in aqueous solution, therefore it has $A l^{3 +} a n d 3 C l^{-}$
Standard heat of hydration of $A l^{3 +}$ and $3 C l^{-}$ ions
$= (△ H)_{h y d r a t i o n} f o r A l^{+ 3} + 3 \times (△ H)_{h y d r a t i o n} f o r C l^{-}$
$= - 4665 + 3 \times (- 381) k J m o l^{- 1}$
$= - 5808 k J / m o l$
Required energy of ionisation of $A l = 5137 k J m o l^{- 1}$
$∴$ Hydration energy dominates ionisation energy
$∴ A l C l_{3}$ would be ionic in aqueous solution.

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Similar questions

Anhydrous

A l C l_{3}

is a covalent compound. From the data given below, predict whether it would remain covalent or become ionic in an aqueous solution .

Ionisation energy of

A l = 5137 k J m o l^{- 1}

Δ H

hydration for

A l^{3 +} = - 4665 k J m o l^{- 1};

Δ H

hydration for

C l^{-} = - 381 k J m o l^{- 1}

Q. Anhydrous

A l C l_{3}

is covalent from the data given below predict whether it would remain covalent or become ionic in aqueous solution.

Ionization energy for A l C l_{3} = 5137 k J m o l^{- 1}

Δ H_{hydration}

for

A l^{+ 3} i s - 4665 k J m o l^{- 1}

Δ H_{hydration}

for

C l^{-}

is -381

k J m o l^{- 1}

Q. Anhydrous

A l {C l}_{3}

is covalent. From the data given below, predict whether it would remain covalent or become ionic in aqueous solution.

Given : Ionization energy for

A l {C l}_{3} = 5137

kJ mol

^{- 1}

Δ_{H y d r a t i o n}

for

{A l}^{3 +} = - 4665

kJ mol

^{- 1}

Δ_{H y d r a t i o n}

for

{C l}^{-} = - 381

kJ mol

^{- 1}

Q. Assertion :Anhydrous

A l C l_{3}

is covalent while aqueous

A l C l_{3}

is ionic. Reason: In water

A l C l_{3}

is present as

A l^{3 +}

and

C l^{-}

ion.

Q. Anhydrous

A l C l_{3}

is covalent from the data given below predict whether it would remain covalent or ionic in aqueous solution.

Ionization energy for A l C l_{3} = 5137 k J m o l^{- 1}

Δ H_{hydration}

for

A l^{+ 3} = - 4665 k J m o l^{- 1}

Δ H_{hydration}

for

C l^{-}

= -381

k J m o l^{- 1}

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Ionisation energy of Al to Al3+=5137kJ mol−1 △Hhydration of:Al3+=−4665 kJ mol−1 and for Cl−=−381 kJ mol−1. Which of the following statement is correct?

Ionisation energy of $A l t o A l^{3 +} = 5137 k J m o l^{- 1} △ H_{h y d r a t i o n} o f : A l^{3 +} = - 4665 k J m o l^{- 1} a n d f o r C l^{-} = - 381 k J m o l^{- 1} .$ Which of the following statement is correct?