What will be the oxidation potential for the following hydrogen half cell at 1 bar pressure and 25° C temperature ? Pt | H 2( g )| HCl ( aq ) when pH =3 and pressure of H 2 gas is 1 bar.

Question

What will be the oxidation potential for the following hydrogen half cell at 1 bar pressure and 25° C temperature ? Pt | H 2( g )| HCl ( aq ) when pH =3 and pressure of H 2 gas is 1 bar. (A) 0.059 V (B) 0.188 V (C) 0.177 V (D) 0.000 V

Tardigrade Admin · Accepted Answer

For oxidation (1/2) H2(g) arrow H+(a q)+e- P=1 atm EO P=EO P°-(0.059/1) log [H+] EO P=0+0.059 p H =0.059 × 3=0.177 V

Q. What will be the oxidation potential for the following hydrogen half cell at $1$ bar pressure and $2 5^{\circ} C$ temperature ?
$Pt ∣ ∣ H_{2 (g)} ∣ ∣ H Cl (a q)$ when $p H = 3$ and pressure of $H_{2}$ gas is $1$ bar.

0.059 V

0.188 V

0.177 V

0.000 V

For oxidation
$\frac{1}{2} H_{2} (g) \to H^{+} (a q) + e^{-}$
$P = 1 a t m$
$E_{OP} = E_{OP}^{\circ} - \frac{0.059}{1} lo g [H^{+}]$
$E_{OP} = 0 + 0.059 p H$
$= 0.059 \times 3 = 0.177 V$

Q. What will be the oxidation potential for the following hydrogen half cell at 1 bar pressure and 25∘C temperature ? Pt∣∣​H2(g)​∣∣​HCl(aq) when pH=3 and pressure of H2​ gas is 1 bar.