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In a cell that utilises the reaction Zn(...

In a cell that utilises the reaction `Zn(s)+2H^+(aq) rarr Zn^(2+)(aq) +H_2(g)` addition of `H_2SO_4` to cathode compartment will

A

Lower the E and shift equilibrium to the left

B

lower the E and shift the equilibrium to the right

C

increase the E and shift the equilibrium to the right

D

Increase the E and shift the equilibrium to the left

Text Solution

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The correct Answer is:
C
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In a cell that utilises the reaction. Zn(s) +2H^(+)(aq) rarr Zn^(2+) (aq) +H_(2)(s) addition of H_(2)SO_(4) to cathode compartement, will: (1) increase the E_(Cell) and shift equilibrium to the right (2) lower the E_(cell) and shift equilibrium to the right (3) lower the E_(cell) and shift equilibrium to the left (4) increase the E_(cell) and shift equilibrium to the left

Emf of a cell corresponding to the reaction:- Zn(s) +2H^(+) (aq) rarr Zn^(2+)(aq) [0.1M] +H_(2)(g) [1.0atm] is 0.49V at 25^(@)C, E_(Zn^(2+)//Zn)^(@) = - 0.76 V . The pH of solution in cathode chamber is.

Knowledge Check

  • In a cell the utilizes the reaction Zn(s)+2H^(+)(aq)rarrZn^(2+)(aq)+H_(2)(g) addition of H_(2)SO_(4) to cathode compartment,

    A
    Lowers the E and shifts equilibrium to the left
    B
    Lowers the E and shifts the equilibrium to the right
    C
    Increases the E and shifts the equilibrium to the right
    D
    Increases the E and shifts the equilibrium to the left

  • In a cell that utilizes the reaction Zn(s)+2H^(+)(aq)toZn^(2+)(aq)+H_(2)(g) addition of H_(2)SO_(4) to the cathode compartment will

    A
    Lower the E and shift equilibrium to the left
    B
    lower the E and shift equilibrium to the right
    C
    increase the E and shift equilibrium to the right
    D
    Increase the E and shift equilibrium to the left

  • In a cell that has the reaction Zn(s) + 2H^(+) (aq) rarr Zn^(2+) (aq) + H_(2) (g) , addition of H_(2) SO_(4) to cathode compartment, will:

    A
    increase the `E_(cell)` and shift the equilibrium to the left
    B
    lower the `E_(cell)` and shift the equilibrium to the right
    C
    increase the `E_(cell)` and shift the equilibrium to the right
    D
    lower the `E_(cell)` and shift the equilibrium to the left

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    Zinc and hydrochloric acid react according to the reaction: Zn(s) + 2HCl(aq) rarr ZnCl_(2)(aq) + H_(2)(g) If 0.30 mol Zn are added to hydrochloric acid containing 0.52 mol of HCl, How many moles of H_(2) are produced ?

    In a cell that utilizes the reactions. Zn(s) + 2H^(+) (aq) rightarrow Zn^(2+)(aq) + H_(2)(g) addition of H_(2)SO_(4) to cathode compartment, will

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