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Al(OH)(3) is amphoteric is nature. Al-...

`Al(OH)_(3)` is amphoteric is nature.
`Al-O` and `O-H` bonds can be borken with equal ease in `Al(OH)_(3)`.

Text Solution

Verified by Experts

The correct Answer is:
C
Assertion `(A)` is true , Reason `( R)` is false.
The `O-H` bond is stronger than the `Al-O` bond in aluminium hydroxide.
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Al_2O_3 is an amphoteric oxide.

NaOH can be used to seprate Al(OH)_(3) and Zn(OH)_(3) .

Knowledge Check

  • Statement 1 : Al(OH)_(3) is amphoteric in nature statement 2: Al-O and O-H bonds can be broken with equal ease in Al(OH)_(3)

    A
    Statement 1 is true, statement 2 is true, statement 2 si a correct explanation for statement 6
    B
    Statement 1 is true, statement 2 is true, statement 2 is not a correct explanation for statement 6
    C
    Statement 1 is true, statement 2 is false
    D
    Statement 1 is false, statement 2 is true

  • Assertion (A) : Al(OH)_(3) is amphoteric in nature. Reason (R) : Al-O and O-H bonds can be broken with equal ease in Al(OH)_(3) .

    A
    Both A and R are true and R is the correct explanation of A
    B
    Both A and R are true but R is not a correct explanation of A
    C
    A is true but R is false
    D
    A is false but R is true

  • Statement -I Al(OH)_3 is amphoteric in nature. statement -II Al-O and O-H bonds can be broken with equal case in Al(OH)_3

    A
    Statement I is correct : statement II is correct : statement II is the correct explanation of statement I
    B
    Statement I is correct : statement II is correct : statement II is not the correct explanation of statement I
    C
    Statement I is correct : statement II is incorrect
    D
    Statement I is incorrect : statement II is correct

    • Similar Questions

    Explore conceptually related problems

    Why Al_(2)O_(3) is amphoteric while B_(2)O_(3) is acidic ?

    NaOH can be used to seprate Al(OH)_(3) and Zn(OH)_(2) .

    Assertion: Al(OH)_(3) is amphoteric in nature. Reason: Al(OH)_(3) is H^(+) donar acid as well as OH^(-) donar base.

    Statement-1: Al(OH)_(3) is amphoteric in nature. Statement-2: It cannot be used as an antacid.

    Amphoterism Amphoteric oxides, such as aluminium oxide, are soluble both in strongly acidic and in strongly base solutions : In acid: Al_2O_3(s)+6H_3O^(+)(aq)hArr2Al^(3+)(aq)+9H_2O(l) In base: Al(OH)_3(s)+OH^(-)(aq)hArr Al(OH)_4^(-)(aq) Dissolution of Al(OH)_3 in excess base is just a special case of the effect of complex-ion formation on solubility. Al(OH)_3 dissolves because excess OH^(-) ions convert it to the soluble complex ion Al(OH)_4^(-) (aluminate ion)The effect of pH on the solubility of Al(OH)_3 is shown in figure. Other examples of amphoteric hydroxides include Zn(OH)_2,Cr(OH)_3,Sn(OH)_2 and Pb(OH)_2 , which react with excess OH^(-) ions to form the soluble complex ion Zn(OH)_4^(2-) (zincate ion), Cr(OH)_4^(-) (chromite ion), Sn(OH)_3^(-) , Fe(OH)_2 and Fe(OH)_3 , dissolve in strong acid but not in strong base. Zn(OH)_2 is a amphoteric hydroxide and is involved in the following two equilbria in aqueous solutions Zn(OH)_2(s)hArrZn^(2+)(aq)+2OH^(-)(aq),K_(sp)=1.2xx10^(-17) Zn(OH)_2(s)+2OH^(-)(aq)hArr[Zn(OH)_4]^(2-)(aq),K_(@)=0.12 At what pH the solubility of Zn(OH)_2 be minimum ?

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