Bronsted Lowry Theory

Q. Conjugate base of $H_{2}P{O}_4^{-}$ is:

1. $HP{O}_4^{2-}$
2. $P{O}_4^{3-}$
3. $H_{3}P{O}_4$
4. $HP{O}_4^{-}$

Q.

In the reaction

AlH₃and LiH acts as

1. Bronsted base and Bronsted acid

2. Lewis acid and Lewis base

3. Lewis base and Lewis acid

4. None of these

Q. Which one of the following can act as Bronsted acid as well as Bronsted base?

1. $C{H}_{3}CO{O}^{-}$
2. $C{O}_3^{2-}$
3. $HPO{4}^{2-}$
4. $S{O}_4^{2-}$

Q.

Which one of the following is a strong electrolyte?

1. HNO₂

2. KCl

3. HF

4. (CH₃)₃N

Q. trends of acidic chracter of h3po4, h3po3 , h3po2

Q. 4. in compound M-OH the acidic nature increases when (1)I.E of Mis low (2)I.E of M is very low (3)I.E of M is high

Q. Four species are listed below.
$\left(i\right)HC{O}_3^{-}$
$\left(ii\right)H_3{O}^{+}$
$\left(iii\right)HS{O}_4^{-}$
$\left(iv\right)HS{O}_{3}F$
Which one of the following is the correct sequence of their acid strength?

1. $\left(iii\right)<\left(i\right)<\left(iv\right)<\left(ii\right)$
2. $\left(iv\right)<\left(ii\right)<\left(iii\right)<\left(i\right)$
3. $\left(ii\right)<\left(iii\right)<\left(i\right)<\left(iv\right)$
4. $\left(i\right)<\left(iii\right)<\left(ii\right)<\left(iv\right)$

Q. According to Bronsted-Lowry concept, the relative strengths of the bases $C{H}_{3}CO{O}^{-}$, $O{H}^{-}$ and $C{l}^{-}$ are in the order:

1. $O{H}^{-}>C{H}_{3}CO{O}^{-}>C{l}^{-}$
2. $C{l}^{-}>O{H}^{-}>C{H}_{3}CO{O}^{-}$
3. $C{H}_{3}CO{O}^{-}>O{H}^{-}>C{l}^{-}$
4. $O{H}^{-}>C{l}^{-}>C{H}_{3}CO{O}^{-}$

Q. Acidic strenght of :- H_2S_2O_{7 } & H_2S_2O_8

Q. Which is the set of amphiprotic species?

1. $H_3{O}^{+},HP{O}_4^{2-},HC{O}_3^{-}$
2. $H_{2}O,HP{O}_3^{2-},H_{2}P{O}_2^{-}$
3. $H_{2}P{O}_4^{-},H_{2}P{O}_3^{-},H_{2}O$
4. All of these

Q.

Classify the following species into Lewis acids and Lewis bases and show how these act as Lewis acid/base: (a) OH^– (b) F^– (c) H⁺ (d) BCl₃.

Q. Conjugate base for Bronsted acids $H_{2}O$ and $HF$ are :

1. $O{H}^{-}$ and $H_2{F}^{+}$, respectively
2. $H_3{O}^{+}$ and $F^{-}$, respectively
3. $O{H}^{-}$ and $F^{-}$, respectively
4. $H_3{O}^{+}$ and $H_2{F}^{+}$, respectively

Q. Whic of the following can act as both a bronsted Acid and base ?

1. $O_2^{+}$​
2. $HCl$
3. $N{a}_{2}C{O}_3$
4. $HSO{4}^{-}$