In the cell- Zn- Zn 2- aq H - aq - H 21 atm Pt- during the working- the p H around cathodeA- DecreasesB- IncreasesC- No changeD- None of these

The correct option is B IncreasesThe reaction takes place at cathode is H+(aq) + e → 1/2 H2 ; since concentration of H+ ion ...

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Standard X

Chemistry

In the cell: ...

Question

In the cell: Zn, Zn²⁺(aq) || H⁺(aq), H₂(1 atm)Pt, during the working, the p^H around cathode

Decreases

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Increases

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No change

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None of these

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Solution

The correct option is B
Increases

The reaction takes place at cathode is
H⁺(aq) + e $\to$ 1/2 H₂ ; since concentration of H⁺ ion decreases, P^H will increase

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In the cell: Zn, Zn²⁺(aq) || H⁺(aq), H₂(1 atm)Pt, during the working, the p^H around cathode

During the working of lead-storage battery, the concentration of H₂SO₄

Q. Consider the cell

Z n / Z n^{2 +} (a q .) | | C l^{-} (a q) / C l_{2} (g) | 1 p t (s)

Given

[Z n^{+ 2}] = 4 M; [C l^{-}] = 0.5 M, (P_{C l_{2}}) = 0.1 b a r

E_{Z n / Z n^{2 +}}^{\circ} = 0.76 V; E_{C l_{2} / C l^{-}}^{\circ} = 1.32 V

\frac{2.303 R T}{F} = 0.06

Z n^{2 +} (a q) + 2 e \to Z n (s)

. This is

$E^{0}$ for the cell, $Z n | Z n {^{2 +}}_{(a q)} | | C u {^{2 +}}_{(a q)} | C u$ is $1.10 V$ at $25^{0} C$ . The equilibrium constant for $Z n + C u {^{2 +}}_{(a q)} \to Z n {^{2 +}}_{(a q)} + C u$ the cell reaction is of the order of :

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In the cell: Zn, Zn2+(aq) || H+(aq), H2(1 atm)Pt, during the working, the pH around cathode

The correct option is B IncreasesThe reaction takes place at cathode is H+(aq) + e → 1/2 H2 ; since concentration of H+ ion decreases, PH will increase

In the cell: Zn, Zn²⁺(aq) || H⁺(aq), H₂(1 atm)Pt, during the working, the p^H around cathode

The correct option is B
Increases

The reaction takes place at cathode is
H⁺(aq) + e $\to$ 1/2 H₂ ; since concentration of H⁺ ion decreases, P^H will increase