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Ways of Representing the Concentration of a Solution

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What is the auto reduction of copper called? Cu2o+cu2s----->cu+so2

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Q. When metallic copper is shaken with a solution of a copper salt, the reaction

C u + {C u}^{2 +} \to 2 {C u}^{+}

proceeds. When equilibrium is established at

298 K

[{C u}^{2 +}] / {[{C u}^{+}]}^{2} = 1.66 \times 10^{6}

{(m o l {d m}^{- 3})}^{- 1}

. If the standard potential of the

{C u}^{2 +} | C u

+ 0.337 V

, what is the standard (reduction) potential of

{C u}^{+} | C u

What is the reduction electrode potential (in volts) of copper electrode when [ $C u^{2 +}$ ]=0.01M in a solution at $25^{0} C$ ?

(E0 of $C u^{2 +} / C u$ electrode is +0.34)

Q. Balanced equations for "the extraction of copper from copper pyrites by self-reduction." is :

C u_{2} S + 2 C u_{2} O \to 6 C u + S o_{2}

If the given statement is true enter 1 else 0.

Q. Estimate the standard reduction potential for the copper/copper sulphide electrode.

C u S, K_{s p} = 8.5 \times 10^{- 36}, E_{C u | C u^{2 +}}^{⊖} = - 0.34 V

Q. The standard reduction potentials of

C u^{2 +} / C u

C u^{2 +} / C u^{+}

0.337 V

0.153 V

The standard electrode potential of

C u^{+} / C u

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Ways of Representing the Concentration of a Solution

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