In the electrochemical cell $H_{2(g)}, 1 \ atm \ | \ H^+_{(aq)}, 1 \ M \ || \ Cu^{2+}_{(aq)}, 1 \ M \ | \ Cu_{(s)}$,which of the following statements is true?
- A$H_2$ is cathode,$Cu$ is anode
- BOxidation occurs at $Cu$ electrode
- CReduction occurs at $H_2$ electrode
- D$H_2$ is anode,$Cu$ is cathode
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If less than $1.1 \ V$ external opposite current is passed through the Daniell cell,for such condition answer the following questions :
$(1)$ Give reaction of cathode,anode and redox.
$(2)$ Between $Zn$ and $Cu$ which metal dissolve in solution ?
$(1)$ Give reaction of cathode,anode and redox.
$(2)$ Between $Zn$ and $Cu$ which metal dissolve in solution ?
Medium
View SolutionAn electrochemical cell is set up as follows: $Pt(H_2, 1 \, atm) | 0.1 \, M \, HCl || 0.1 \, M \, CH_3COOH | (H_2, 1 \, atm) Pt$. The $E.M.F.$ of this cell will not be zero because:
MediumAIPMT 1995
View SolutionAmong the following,which is/are intensive property/properties?
$A$. Molar conductivity
$B$. Electromotive force
$C$. Resistance
$D$. Heat capacity
$A$. Molar conductivity
$B$. Electromotive force
$C$. Resistance
$D$. Heat capacity
MediumIIT 2010
View SolutionOne of the commonly used electrodes is the calomel electrode. Under which of the following categories does the calomel electrode fall?
Suppose that an alkaline dry cell was manufactured using cadmium metal rather than $Zn$. What effect would this have on the standard emf of the cell? The standard reduction potential $E^o_{Cd^{2+}/Cd} = -0.40 \ V$ while $E^o_{Zn^{2+}/Zn} = -0.76 \ V$.
Difficult
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