Question:
If standard emf of cell \(\mathrm{Zn}_{(\mathrm{s})}\left|\mathrm{Zn}_{(\mathrm{1M})}^{+2}\right| \mathrm{Ag}_{(\mathrm{1M})}^{+1} \mid \mathrm{Ag}_{(\mathrm{s})}\) is 1.55 V .
What is electrical work done under standard conditions?
If standard emf of cell \(\mathrm{Zn}_{(\mathrm{s})}\left|\mathrm{Zn}_{(\mathrm{1M})}^{+2}\right| \mathrm{Ag}_{(\mathrm{1M})}^{+1} \mid \mathrm{Ag}_{(\mathrm{s})}\) is 1.55 V .
What is electrical work done under standard conditions?
Show Hint
Maximum electrical work equals \(-nFE^0\) for the cell reaction.
Updated On: Nov 13, 2026
- -144.750 kJ
- -193.00 kJ
- -299.150 kJ
- -386.00 kJ
Show Solution
Verified By Collegedunia
The Correct Option is C
Solution and Explanation
Step 1: Understanding the Concept
Electrical work done by a cell is \(W=\Delta G^0=-nFE^0_{\text{cell}}\).
Step 2: Find n
The cell reaction is \(\text{Zn}+2\text{Ag}^+\rightarrow\text{Zn}^{2+}+2\text{Ag}\), so \(n=2\).
Step 3: Calculation
\(\Delta G^0=-2\times96500\times1.55=-299150\text{ J}\)
Step 4: Convert to kJ
\(-299150\text{ J}=-299.150\text{ kJ}\)
Final Answer:
The electrical work done is -299.150 kJ. \[ \boxed{\text{(C) }-299.150\text{ kJ}} \]
Electrical work done by a cell is \(W=\Delta G^0=-nFE^0_{\text{cell}}\).
Step 2: Find n
The cell reaction is \(\text{Zn}+2\text{Ag}^+\rightarrow\text{Zn}^{2+}+2\text{Ag}\), so \(n=2\).
Step 3: Calculation
\(\Delta G^0=-2\times96500\times1.55=-299150\text{ J}\)
Step 4: Convert to kJ
\(-299150\text{ J}=-299.150\text{ kJ}\)
Final Answer:
The electrical work done is -299.150 kJ. \[ \boxed{\text{(C) }-299.150\text{ kJ}} \]
Was this answer helpful?
0
0
Top MHT CET Chemistry Questions
- The temperature of $32^{\circ}C$ is equivalent to
- The heat of formation of water is $ 260\, kJ $ . How much $ H_2O $ is decomposed by $ 130\, kJ $ of heat ?
- If a metal crystallises in bcc structure with edge length of unit cell $4.29 \times 10^{-8}\, cm$ the radius of metal atom is
- Which of the following oxides can act both as an oxidising agent as well as reducing agent ?
- "The mass and energy both are conserved in an isolated system", is the statement of
View More Questions
Top MHT CET Galvanic Cells Questions
- Standard hydrogen electrode $(SHE)$ is a
- Given, for $ Sn^{4+}/Sn^{2+} $ , standard reduction potential is $ 0.15 \,V $ and for $ Au^{3+}/Au $ , standard reduction potential is $ 1.5\, V $ . For the reaction, $ {3Sn^{2+} + 2Au^{3+} -> 3Sn^{4+} + 2Au } $ , the value of $ E^{\circ}_{cell} $ is,
- Which of the following is selected as cathode for a galvanic cell set up with nickel anode?
- Which of the following is selected as cathode for a galvanic cell set up with nickel anode?
- Which among the following statements is true for Galvanic cell?
View More Questions
Top MHT CET Questions
- During r- DNA technology, which one of the following enzymes is used for cleaving DNA molecule ?
- In non uniform circular motion, the ratio of tangential to radial acceleration is (r = radius of circle, $v =$ speed of the particle, $\alpha =$ angular acceleration)
- The temperature of $32^{\circ}C$ is equivalent to
- The line $5x + y - 1 = 0$ coincides with one of the lines given by $5x^2 + xy - kx - 2y + 2 = 0 $ then the value of k is
- The heat of formation of water is $ 260\, kJ $ . How much $ H_2O $ is decomposed by $ 130\, kJ $ of heat ?
View More Questions