Acids, Bases and Salts

“An acid is a proton donor”. This theory was given by

The conjugate base of ${\mathrm{OH}}^{-}$ is ${\mathrm{O}}^{2-}$.

Among the following, the one which can act as both as Bronsted acid as well as Bronsted base is

In the reaction  ${\mathrm{I}}_2 + {\mathrm{I}}^{-} \to {{\mathrm{I}}_3}^{-}$, which is the Lewis base? 

Which of the followings are Lewis acids? ${\mathrm{H}}_2\mathrm{O}, \mathrm{B}{\mathrm{F}}_3, {\mathrm{H}}^{+}$ and $\mathrm{N}{\mathrm{H}}_4^{+}$

When hydrogen chloride $\left(\mathrm{HCl}\right)$ is dissolved in acetic acid $\left({\mathrm{CH}}_3\mathrm{COOH}\right)$  then the following equilibrium is established like

${\mathrm{CH}}_3\mathrm{COOH} +\mathrm{HCl} \rightleftharpoons {\mathrm{CH}}_3{\mathrm{COOH}}_2^{+} + {\mathrm{Cl}}^{-}$ 

Which of the following set is correct respective to conjugate acid-base pair ?

"Those substances which give hydrogen ion (${\mathrm{H}}^{+}$) when they decompose in water are called acids and those substances that decompose in water and give hydroxyl ion (${\mathrm{OH}}^{-}$) are called bases." This definition was given by:

The weakest base among the following species is ________

What is the correct order of acidity for ${\mathrm{NH}}_3,{\mathrm{NH}}_4^{+},{\mathrm{NH}}_2^{-}$?

When $50 \mathrm{ml} 0.1 \mathrm{M} \mathrm{HCl}$ is added to $50 \mathrm{ml}$ of $0.01 \mathrm{M} \mathrm{KOH}$, the $\mathrm{pH}$ of the resulting solution will be ___.

According to Bronsted Lowry's theory ${\mathrm{BF}}_3 \mathrm{and} {\mathrm{AlCl}}_3$ are not Acids.

Bronsted-Lowry's theory cannot explain the reactions between acidic oxides for instance like ${\mathrm{CO}}_2, {\mathrm{SO}}_2, {\mathrm{SO}}_3$ etc.  and also the basic oxides like $\mathrm{CaO},\mathrm{BaO},\mathrm{MgO}$ etc.

Which of the following are the limitations of Bronsted-Lowry theory?

Salts are made up of molecules.

Three reactions involving ${\mathrm{H}}_2{{\mathrm{PO}}_4}^{-}$ are given below :

(i)  ${\mathrm{H}}_3{\mathrm{PO}}_4 +{\mathrm{H}}_2\mathrm{O} \to {\mathrm{H}}_3{\mathrm{O}}^{+} + {\mathrm{H}}_2{{\mathrm{PO}}_4}^{-}$

(ii) ${\mathrm{H}}_2{{\mathrm{PO}}_4}^{-} +{\mathrm{H}}_2\mathrm{O} \to {{\mathrm{HPO}}_4}^{2-} +{\mathrm{H}}_3{\mathrm{O}}^{+}$

(iii) ${\mathrm{H}}_2{{\mathrm{PO}}_4}^{-} +{\mathrm{OH}}^{-} \to {\mathrm{H}}_3{\mathrm{PO}}_4 + {\mathrm{O}}^{2-}$

The conjugate base of ${\mathrm{OH}}^{-}$ is 

In the reaction  ${\mathrm{I}}_2 + {\mathrm{I}}^{-} \to {{\mathrm{I}}_3}^{-}$, which is the Lewis base? 

Explain acid and base according to Bronsted Lowry and Lewis.