Question

(b) if h+ concentration of a solution is 1×10–2 mol l-1 what will be its p4 value?

Answer 1

the ph value of this solution is 2.

Answer 2

<<This question is answered on the assumption that it is pH which has to be determined and not p4 as given.>>

The answer is 2.

Explanation:

For any solution, the relationship between its pH and hydrogen ion concentration can be given as

pH = -log(H+)

For the given solution, H+ = 1 x 10^-2 mol/l.

Thus, pH = -log(1 x 10^-2)

=> pH = -(-2) log (10) [since log m^n = n log m]

=> pH = 2 log10

=> pH = 2 (1) [since log10 = 1]

=> pH = 2.