A hydrogen electrode is immersed in a solution with pH = 0 (HCl). By how much will the potential (reduction) change if an equivalent amount of NaOH is

Question

A hydrogen electrode is immersed in a solution with pH = 0 (HCl). By how much will the potential (reduction) change if an equivalent amount of NaOH is

A hydrogen electrode is immersed in a solution with pH = 0 (HCl). By how much will the potential (reduction) change if an equivalent amount of NaOH is added to this solution?
(Take `p_(H_(2) = 1atm)` T=298K
A. increase by 0.41 V
B. increase by 59 mV
C. decrease by 0.41 V
D. decrease by 59 mV

Monjur Alahi

6 views

2025-01-04 04:42

1 Answers

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Salim Ahmed Kawsar · Accepted Answer · 2023-02-05T15:29:48+06:00

Salim Ahmed Kawsar

Correct Answer - C
pH changes from 0 to 7
`therfore[H^(+)]` changes from 1 to `10^(-7)` M.
accordingly `E_(red)` decreases by `0.059log10^(-7)` i.e., `0.059xx(-7)=-0.41"volt"`

6 views Answered 2023-02-05 15:29