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The standard potential of the cell in the following reaction is ______. CdA(s)+CuA(1M)2+⟶CdA(1M)2++CuA(s) ECdECu(ECd∘=-0.403V,ECu∘=0.334V)

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प्रश्न

The standard potential of the cell in the following reaction is ______.

\[\ce{Cd_{(s)} + Cu^{2+}_{(1M)} -> Cd^{2+}_{(1M)} + Cu_{(s)}}\]

`("E"_("Cd")^circ = - 0.403V, "E"_("Cu")^circ = 0.334V)`

विकल्प

  • – 0.737 V

  • 0.737 V

  • – 0.069 V

  • 0.069 V

MCQ
रिक्त स्थान भरें
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उत्तर

The standard potential of the cell in the following reaction is 0.737 V.

Explanation:

`"E"_"cell"^circ = "E"_"RHE"^circ - "E"_"LHE"^circ`

= 0.334 – (– 0.403 V)

= 0.737 V

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2021-2022 (March) Set 1

संबंधित प्रश्न

Choose the most correct option.

The standard potential of the cell in which the following reaction occurs:
H2 (g,1 atm) + Cu2+ (1M) → 2H+ (1M) + Cu(s),
`("E"_"Cu"^circ = 0.34 "V")` is


Answer the following in one or two sentences.

What is standard cell potential for the reaction

\[\ce{3Ni_{(s)} + 2Al^{3+} (1M) → 3Ni^{2+} (1M) + 2Al(s)}\], if `E_"Ni"^circ` = –0.25 V and  `"E"_("Al")^circ` = –1.66 V?


Answer the following in one or two sentences.

Write Nernst equation. What part of it represents the correction factor for nonstandard state conditions?


Answer the following in one or two sentences.

Under what conditions the cell potential is called standard cell potential?


Answer the following in brief.

Construct a galvanic cell from the electrodes Co3+ | Co and Mn2+/Mn. \[\ce{E{^{\circ}_{Co}}}\] = 1.82 V, \[\ce{E{^{\circ}_{Mn}}}\] = –1.18 V. Calculate \[\ce{E{^{\circ}_{cell}}}\]


Answer the following:

Calculate emf of the cell:

Zn(s) |Zn2+ (0.2 M)||H+ (1.6 M)| H2(g, 1.8 atm)| Pt at 25 °C.


What is cell voltage?


Calculate `"E"_"cell"^circ` of the following galvanic cell:

Mg(s) / Mg2+(1 M) // Ag+ (1 M) / Ag(s) if `"E"_"Mg"^circ` = – 2.37 V and `"E"_"Ag"^circ` = 0.8 V. Write cell reactions involved in the above cell. Also mention if cell reaction is spontaneous or not.


Standard reduction electrode potentials of three metals A, B and C are +0.5 V, −3.0 V and −1.2 V respectively. The reducing power of these metals is ______.


Nernst equation for the following cell reaction at 298 K is:

\[\ce{Mg_{(s)} | Mg^{2+}_{( aq)} || Ag^+_{( aq)} | Ag_{(s)}}\]


The reduction potential of a half-cell consisting of nickel electrode in 0.1 M NiSO4 solution at 25°C is ____________.

(E0 = −0.257 V)


Identify the strongest reducing agent from the data given below:

Element `"E"^0 ("V")`
Al −1.66
Fe −0.44
Hg +0.79
Cu +0.337

What is the standard emf of the following cell?

\[\ce{Ni_{(s)} | Ni^{2+}_{( aq)} || Au^{3+}_{( aq)} | Au_{(s)}}\]

if \[\ce{E^0_{Ni}}\] = −0.25 V, \[\ce{E^0_{Au}}\] = 1.50 V.


What is the ΔG0 for the following reaction?

\[\ce{Al_{(s)} + Fe^{3+}_{( aq)} -> Al^{3+}_{( aq)} + Fe_{(s)}}\]; \[\ce{E^0_{cell}}\] = +2.43


For the following cell, standard potential of copper electrode is 0.337 V and standard cell potential is 0.463 V.

\[\ce{Cu | Cu^{2+} (1 M) || Ag^+ (1 M)  Ag}\]

What is the standard potential of silver electrode?


Answer the following in one or two sentences.

What is the standard cell potential for the reaction?

\[\ce{2Al(s) + 3Ni^{2⊕}(1M) -> 2Al^{3⊕}(1 M) + 3Ni(s)}\]

if \[\ce{E{^{\circ}_{Ni}}}\] = −0.25 V and \[\ce{E{^{\circ}_{Al}}}\] = −1.66 V?


The standard EMF for the cell reaction,
\[\ce{Zn + Cu^{2+} -> Zn^{2+} + Cu}\], 
is 1.10 V at 25°C. The EMF of the cell reaction, when 0.1 M Cu2+ and 0.1 M Zn2+ solutions are used at 25°C is:


Which element from the following has the highest negative standard reduction potential?


The standard potential of the electrode Zn2+(0.02M) |Zn(s) is − 0.76 V. Calculate the electrode potential of the zinc electrode.


Calculate the emf of the following cell at 25°C.

Zn(s)|Zn2+(0.08 M) || Cu2+(0.l M) |Cu(s)

E0zn = − 0.76 V, E0cu = 0.36 V.


Write the value of `(2.303 RT)/F` in the Nernst equation?


Write the four applications of emf series.


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\[\mathrm{Zn_{(aq)}^{+2}+2e^{-}\longrightarrow Zn_{(s)}~is~-0.76~V}\]

What is standard potential of reaction 

\[2\mathrm{Zn}_{(\mathrm{s})}\longrightarrow2\mathrm{Zn}_{(\mathrm{aq})}^{+2}+4\mathrm{e}^{-}\] ?


Which from following formulae is used to obtain value of E°cell for a reaction taking place in Dry cell?


What is the reduction potential of hydrogen gas electrode when pure hydrogen gas is at 1 atmosphere pressure and platinum electrode is in contact with HCI of pH 2 at 298 K?


Which from following is CORRECT expression for Ecell of following cell?

\[\ce{Pb_{(s)} | Pb^++_{(1 m)} || Ag^+_{(0.1 m)} | Ag_{(g)}}\] at 25°C?


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