Advertisements
Advertisements
प्रश्न
Answer the following in one or two sentences.
Formulate a cell from the following electrode reactions:
`"Au"_(("aq"))^(3+) + 3"e"^(-) -> "Au"_(("s"))`
Mg(s) → `"Mg"_(("aq"))^(2+)` + 2e-
उत्तर
The oxidation half-reaction at the anode is
Mg(s) → `"Mg"_(("aq"))^(2+)` + 2e-
The reduction half-reaction at cathode is
`"Au"_(("aq"))^(3+) + 3"e"^(-) -> "Au"_(("s"))`
| Notation for anode: | Mg(s) | `"Mg"_(("aq"))^(2+)` |
| Notation for cathode: | `"Au"_(("aq"))^(3+)` | Au(s) |
Cell formula:
Mg(s) |`"Mg"_(("aq"))^(2+)`| |`"Au"_(("aq"))^(3+)`| Au(s)
APPEARS IN
संबंधित प्रश्न
Answer the following in one or two sentences.
Write any two functions of salt bridge.
Answer the following in one or two sentences.
What is the significance of the single vertical line and double vertical line in the formulation galvanic cell?
Answer the following in brief.
What is a salt bridge?
Calculate `"E"_"cell"^0` for galvanic cell with electrodes Co/Co3+// Mn2+/Mn.
`"E"_"Mn"^0` = - 1.18 V, `"E"_"Co"^0` = 1.82 V.
Give the chemical composition present in the salt bridge.
What are the functions of a salt bridge in a galvanic cell?
Represent the galvanic cell from following overall cell reaction:
3Ni(s) + 2Al3+ (1 M) → 3Ni2+(1 M) + 2Al(s)
Calculate standard cell potential of following galvanic cell:
Zn/Zn2+(1 M) // Pb2+(1 M)/Pb. If `"E"_"Pb"^0` = 0.126 V and `"E"_"Zn"^0` = –0.763 V
A single vertical line is used to denote __________ in the cell notation of galvanic cell.
In the reaction, \[\ce{Cu_{(s)} + 2Ag^+_{( aq)} -> Cu^{2+}_{( aq)} + 2Ag_{(s)}}\]; the reduction half-cell reaction:
Select the INCORRECT statement regarding galvanic cell notation.
The \[\ce{E^0_{cell}}\] for the following cell is:
\[\ce{Fe_{(s)} | Fe^{2+}_{( aq)} || Zn^{2+}_{( aq)} | Zn_{(s)}}\]
\[\ce{E^0_{Fe}}\] = −0.41 V,
\[\ce{E^0_{Zn}}\] = −0.76 V
Which of the following scientic notation of some figures is not correct?
Formulate the galvanic cell in which the following reaction occurs.
2Al(S) + 3Cu2+(aq) → 2Al3+(aq) + 3Cu(S)
Write two uses of salt bridge.
