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Identify the correct order of acidic str...

Identify the correct order of acidic strength of `CO_(2),CuO, CaO` and `H_(2)O`.

A

`CaO lt CuO lt H_2O lt CO_2`

B

`H_2O lt CuO lt CaO lt CO_2`

C

`CaO lt H_2O lt CuO lt CO_2`

D

`H_2O lt CO_2 lt CaO lt CuO`

Text Solution

Verified by Experts

The correct Answer is:
A
CuO and CaO are basic oxides (oxides of metals).Out of the two CaO is more basic.Therefore their acid strength is in the order CaO lt CuO.
`CO_2` and `H_2O` are oxides of non-metals.
`H_2O` is neutral whereas `CO_2` is acidic in nature, Therefore their acidic strength is in the order `H_2O lt CO_2`.
Thus, correct order of acidic strength is `CaO lt CuO lt H_2O lt CO_2`.
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