Question

Find the basicity of the following :
i)HCl
ii)HNO3
iii)H3SO3
iv)HCOOH
v)H2SO4
vi)H3PO4
vii)CH3COOH

Answer 1

Explanation:

In aqueous medium, HCl + H2O → H3O+ + Cl-. Here hydronium ion also refers the H+ ions as it can break into water and H+ ion. The number of hydrogen(hydronium - H3O+) ion produced = 1 = Basicity of an acid

2) HNO3 :- the basicity of nitric acid. One is the basicity of HNO3. HNO3 is also known as mono basic as the basicity is one

3) H3PO4 :- H3PO4 3H+ + PO4- For hydrogen to be acidic it must be attached to strong electronegative atom. Here it is attached to 3 oxygen Hence basicity of H3PO4 is 3.

4) H2SO4 :- 2 basicity

5) CH3COOH :- In acetic acid, ${ CH }_{ 3 }{ COOH }$, there is only one ionizable hydrogen, which is attached to oxygen. As we see here that only one hydrogen ion releases so, it's basicity is one although it has four hydrogen atoms. Hence, the basicity of acetic acid is ${ 1 }$

6) H3SO3 :-

7) HCOOH :-