Question

Rank the following in decreasing order of their acidic strengths.

• A. $A>C>B>D$
• B. $A>D>B>C$
• C. $A>D>C>B$
• D. $A>B>D>C$

Answer 1

The correct option is C $A>D>C>B$

Acid has the tendency to give $H^{+}$

• $E.N.$ of Oxygen is more than nitrogen that's why the positive charge on oxygen will be less stable than nitrogen that's why $A>D$
  
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• Now in $C$, $OH$ will donate $H^{+}$ more easily as the after removal of $H^{+}$ the negative charge will be more stable on oxygen than nitrogen, So $C>B$
  

Finally $A>D>C>B$

Option C is correct.