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Which of the following oxides is not a m...

Which of the following oxides is not a mixed anhydride?

A

`NO_(2)`

B

`P_(4)O_(8)`

C

Both (1)and (2)

D

`N_(2)O_(3)`

Text Solution

Verified by Experts

The correct Answer is:
4
They are all acidic oxygen which dissolve in water to from oxyacids,hence they are also called acid anhydrides of corresponding acids.
`N_(2)O_(3)+H_(2)Orarr2HNO_(2)`
`2NO_(2)+H_(2)OrarrHNO_(2)+HNO_(3)`
`P_(4)O_(8)+H_(2)Orarr2H_(3)PO_(3)+2H_(3)PO_(4)`
Last two oxides which form two oxyacids are called mixed anhydrides.
Acidic oxides combines with bases to form salts and water but with basic oxides they form salts only.
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Knowledge Check

  • Which of the following oxides are mixed oxide?

    A
    `PbO_(2)`
    B
    `SnO_(2)`
    C
    `Pb_(2)O_(3)`
    D
    `Pb_(3)O_(4)`

  • Which of the following oxides of nitrogen is anhydride of nitric acid ?

    A
    `N_(2)O_(3)`
    B
    `N_(2)O_(4)`
    C
    `N_(2)O_(5)`
    D
    `N_(2)O`

  • Which of the following acids does not form anhydride?

    A
    Formic acid
    B
    acetic acid
    C
    Propionic acid
    D
    n-butyric acid

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