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Identify the correct order of acidic str...

Identify the correct order of acidic strengths of `CO_2,CuO, CaO and H_2O`

A

`CaO lt CuO lt H_(2)O lt CO_(2)`

B

`H_(2)O lt CuO lt CaO lt CO_(2)`

C

`CaO lt H_(2) O lt CuO lt CO_(2)`

D

`H_(2)O lt CO_(2) lt CaO lt CuO`

Text Solution

Verified by Experts

The correct Answer is:
A
`CaO lt CuO lt H_(2) P lt CO_(2)` (Apply Fajans' rule)
Going from left to right in the periodic table along a group, the acidic character of oxides goes on decreasing.
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Knowledge Check

  • The correct order of acidic strength is

    A
    `CaO lt CuO lt H_(2)O lt CO_(2)`
    B
    `H_(2)O lt CuO lt CaO lt CO_(2)`
    C
    `CaO lt H_(2)O lt CuO lt CO_(2)`
    D
    `H_(2)O lt CO_(2) lt CaO lt CuO`

  • The correct order of acidic strength is

    A
    `K_(2)0 gt CaO gt MgO`
    B
    `CO_(2) gt N_(2)O_(5) gt SO_(3)`
    C
    `Na_(2)O gt MgO gt Al_(2)O_(3)`
    D
    `Cl_(2)O_(7) gt SO_(2) gt P_(4)O_(10)`

  • The correct order of acid strength is

    A
    `Cl_(2)O_(7)gtSO_(3)gtP_(4)O_(10)`
    B
    `CO_(2)gtN_(2)O_(5)gtSO_(3)`
    C
    `Na_(2)OgtMgOgtAl_(2)O_(3)`
    D
    `K_(2)OgtCaOgtMgO`

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