When 3 mol of HCl is added to 1 L of an acidic buffer, its pH changes from 3.9 to 2.5. The buffer capacity of the buffer solution is.

Question

When 3 mol of HCl is added to 1 L of an acidic buffer, its pH changes from 3.9 to 2.5. The buffer capacity of the buffer solution is. (A)  (B)  (C)  (D)

Tardigrade Admin · Accepted Answer

Buffer capacity =( text Number of moles / litre of acid or base added / text changes in pH text or pOH ) =(3/3.9-2.5)=(3/0.6)=5

Q. When $3 m o l$ of $H Cl$ is added to $1 L$ of an acidic buffer, its $p H$ changes from $3.9$ to $2.5$ . The buffer capacity of the buffer solution is_____.

Buffer capacity

$= \frac{Number of moles / litre of acid or base added}{changes in p H or pO H}$

$= \frac{3}{3.9 - 2.5} = \frac{3}{0.6} = 5$

Q. When 3mol of HCl is added to 1L of an acidic buffer, its pH changes from 3.9 to 2.5. The buffer capacity of the buffer solution is_____.

Buffer capacity = changes in pH or pOH Number of moles / litre of acid or base added ​ =3.9−2.53​=0.63​=5

Q. When $3 m o l$ of $H Cl$ is added to $1 L$ of an acidic buffer, its $p H$ changes from $3.9$ to $2.5$ . The buffer capacity of the buffer solution is_____.

Buffer capacity

$= \frac{Number of moles / litre of acid or base added}{changes in p H or pO H}$

$= \frac{3}{3.9 - 2.5} = \frac{3}{0.6} = 5$