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Observe the g...

Question

Observe the given diagram and fill in the blanks by choosing the correct option.

H_{2 (g)}

1

atm, y-

10^{- 2} M H^{+}

, z- Finely divided Pt

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H_{2 (g)}

1

bar, y-

1.00

M H^{+}

, z- Finely divided Pt

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1.00

H^{+}

, y-

H_{2 (g)}

1

bar, z- Finely divided Ni

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H_{2 (g)}

1

bar, y-

1.00

H^{+}

, z- Pt granules

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Solution

The correct option is C x- $H_{2 (g)}$ at $1$ bar, y- $1.00$ $M H^{+}$ , z- Finely divided Pt
This is standard hydrogen electrode.
It contain platinum wire,
From x, $H_{2} (g)$ is passed at $1$ bar.
where as, $y$ is $1$ $M$ concentration of $H^{+}$ (acid)
$Z$ is finely divided platinum coated platinum on platinum foil.
Overall reaction- $H^{+} (a q) + 2 e^{-} ⟶ H_{2} (g)$
Option B is the correct answer.

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