Question

12. Which of the following can act as an acid as well as base by Lowry -
Bronsted theory?
a) H20
b) NH3-
c) NH4OH
d) Ca(OH)2
​

Answer 1

Answer:

c) NH4 OH is the correct answer of these question

Answer 2

Explanation:

Correct option is

C

ii and iv

In the Bronsted Lowry theory, an acid donates a proton and the base accepts it.

HCOO

−

and O

2−

has no ionisable H atoms and therefore, cannot donate H

+

ion so cannot be acids.

NH

3

and HSO

4

−

both can accept a proton as well as donate a proton. So, are Bronsted acid and as well as a base.

NH

3

+H

+

→NH

4

+

NH

3

→NH

2

−

+H

+

HSO

4

−

+H

+

→H

2

SO

4

HSO

4

−

→SO

4

2−

+H

+