An aqueous solution of 1M NaCl and 1M HCl is:

Question

An aqueous solution of 1M NaCl and 1M HCl is: (A) not a buffer but pH < 7 (B) not a buffer but pH > 7 (C) a buffer with pH < 7 (D) a buffer with pH > 7

Tardigrade Admin · Accepted Answer

NaCl is salt of strong acid and strong base. Its not the case of buffer. NaCl + H 2 O leftharpoons NaOH + HCl aqueous NaCl, itself exact neutral solution HCl + H 2 O leftharpoons H 3 O ++ Cl - makes solution acidic.

Q. An aqueous solution of $1 M N a Cl$ and $1 M H Cl$ is:

not a buffer but $p H < 7$

not a buffer but $p H > 7$

a buffer with $p H < 7$

a buffer with $p H > 7$

$N a Cl$ is salt of strong acid and strong base. Its not the case of buffer.

$N a Cl + H_{2} O ⇌ N a O H + H Cl$

aqueous $N a Cl$ , itself exact neutral solution

$H Cl + H_{2} O ⇌ H_{3} O^{+} + C l^{-}$

makes solution acidic.

Q. An aqueous solution of 1MNaCl and 1MHCl is:

not a buffer but pH<7

not a buffer but pH>7

a buffer with pH<7

a buffer with pH>7