Question

HAO is the compound whose aqueous solutions is basic and order of basic strength is____.

• A. $HCO=HAO$
• B. $HCO<HAO$
• C. $HCO>HAO$
• D. non of these

Answer 1

The correct option is C $HCO>HAO$

As per Gallis, in $AOH$

(i) if electronegativity of A is more than 1.7 (Non-metal) then it is acidic in nature.

(ii) if electronegativity of 'A' is less than 1.7 (metal) then $AOH$ will be basic in nature.

So $COH$ is basic in nature as it has very low electronegativity (1.6).

and basic strength is $HCO>HAO$.

Hence, the correct option is $\text{C}$