Ionic EquilibriumHard

Question

The correct order of acidic strength is :

Options

A.CaO < CuO < H2O < CO2
B.H2O < CuO < CaO < CO2
C.CaO < H2O < CuO < CO2
D.H2O < CO2 < CaO < CuO

Solution

CaO is strongest base, CO2 is acidic. Also CaO is strong base than H2O

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