Question

calculate PH and p o h of 10^-8 M HCL solution​

Answer 1

Explanation:

[H+] = 10‐⁸ M

As we can see,

The concentration of H+ is very low.

Hence, It is a very dilute solution.

So, we have to consider Concentration of H+ from H2O also.

[H+] of water = 10‐⁷ M

Total [H+] = (10‐⁸ + 10‐⁷ ) M ~ 10‐⁷ (approx.)

pH = -log[H+] = 7 (approx.)

pOH = 14 - pH = 14 - 7 = 7 (approx.)