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Standard XII

Biology

Osmotic Pressure and Osmotic Potential

A copper_ sil...

Question

A copper_ silver cell is set up. The copper ion concentration is 0.10 M. The concentration of silver ion is not know.the cell potential when measured was 0.422V determine the concentration of silver ions in the cell (given electro potential value Ag+/ Ag=+0.80v, Ep value of Cu 2+ / cu=+0.34v

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Similar questions

Q. Calculate the concentration of silver ions in the cell constructed by using

0.1 M

concentration of

{C u}^{2 +}

and

{A g}^{+}

ions.

C u

and

A g

metals are used as electrodes. The cell potential is

0.422 V

For a cell reaction Cu(s) + 2Ag⁺(aq) → Cu ²⁺+ 2 Ag⁺ (aq) the standard cell potential is 0.46V . By doubling the concentration of Copper(II) ions, The standard cell potential will get:-

Given;

E_{C u^{2 +} | C u}^{⊖} = 0.34 V, E_{Z n^{2 +} | Z n}^{⊖} = - 0.76 V

E_{A g^{\oplus} | A g}^{⊖} = 0.80 V

Assertion: Copper sulphate solution can be stored in silver vessel.

Reason:

E_{c e l l}^{⊖}

is positive.

Q. Which is the correct value for the standard potential for a silver-copper voltaic cell?
The standard half cell potential at

298 K

are:

A g^{+} (a q) + e^{-} \to A g (s); E_{r e d}^{o} = x

C u^{2 +} (a q) + 2 e^{-} \to C u (s) : E_{r e d}^{o} = y

[

x > y

]

Q. A cell

A g | A g^{+} | | C u^{+ +} | C u

initially contains

2 M

^{+}

and 2M Cu

^{+ +}

ions. The change in cell potential after the passage of

10 a m p

current for

4825 s e c

is:

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